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All questions of Structural Organisation in Animals for NEET Exam
Which one of the following statements is true for cockroach?- a)They are ureotelic.
- b)Anal styles are absent in females.
- c)The number of ovarioles in each ovary is ten.
- d)The larval stage is called caterpillar.
Correct answer is option 'B'. Can you explain this answer?
Which one of the following statements is true for cockroach?
a)
They are ureotelic.
b)
Anal styles are absent in females.
c)
The number of ovarioles in each ovary is ten.
d)
The larval stage is called caterpillar.
|
Pulicharla Subbareddy answered |
Anal styles are present only in male cockroach
If a clean dry bone is kept in dil HCl for about 3 days, it- a)Breaks into pieces
- b) Becomes soft and elastic
- c)Dissolves
- d)Remain unchanged
Correct answer is option 'B'. Can you explain this answer?
If a clean dry bone is kept in dil HCl for about 3 days, it
a)
Breaks into pieces
b)
Becomes soft and elastic
c)
Dissolves
d)
Remain unchanged
|
Neha Joshi answered |
HCl is hydrochloric acid, strong acid. Bone is made of minerals, and the most prominent mineral is calcium. When a bone is dropped in the HCl medium, the calcium of bone slowly starts dissolve due to the action of the strong acid. HCl + Ca --> CaCl2 + H2. Afterward, the bone is depleted of calcium but it does not "melt" because there are other minerals that make up the bone such as potassium, vitamins, and collagen. Since calcium is the main mineral in the bone, the bone becomes brittle and more susceptible to breakage. Therefore, the correct answer is option B.
Covering membrane around muscle fibre is known as- a)Neurilemma
- b)Plasmalemma
- c)Sarcolemma
- d)Myolemma
Correct answer is option 'C'. Can you explain this answer?
Covering membrane around muscle fibre is known as
a)
Neurilemma
b)
Plasmalemma
c)
Sarcolemma
d)
Myolemma
|
|
Rahul answered |
The sarcolemma is the cell membrane of the striated muscle fibre cell. It is also known as the myolemma. The function of the sarcolemma is similar to the function of the plasma membrane of eukaryotic cells. The plasma membrane covering the muscle fibre is known as the sarcolemma.
Bone forming cells which secrete ossein protein are called as- a)Chondroblasts
- b)Chondrocytes
- c)Osteoblasts
- d)Osteocytes
Correct answer is option 'C'. Can you explain this answer?
Bone forming cells which secrete ossein protein are called as
a)
Chondroblasts
b)
Chondrocytes
c)
Osteoblasts
d)
Osteocytes
|
Suresh Iyer answered |
Osteoclasts are large cells which dissolve the bones. They come from bone marrow whereas Osteoblasts help in formation of bones. They make a small bone called 'osteoid' made by some proteins nd collagen.
Membrane of Krause or Z line is a dark membrane which bisects
- a)A band or anisotropic band
- b)Henson's line
- c)I band or isotropic band
- d)Sarcomere
Correct answer is option 'D'. Can you explain this answer?
Membrane of Krause or Z line is a dark membrane which bisects
a)
A band or anisotropic band
b)
Henson's line
c)
I band or isotropic band
d)
Sarcomere
|
Ritu Singh answered |
Explanation:The Membrane of Krause, also known as the Z line, bisects the I band or isotropic band. Here's a brief explanation of the different components involved:- I band or isotropic band: - The I band is a lighter, less dense region in a sarcomere. - It contains only thin (actin) filaments. - The I band bisected by the Z line, dividing it into two equal halves.- Z line (Membrane of Krause): - The Z line is a dark membrane that appears in the middle of the I band. - It serves as the attachment site for the thin filaments and helps maintain the structure of the sarcomere. - The Z line plays a crucial role in muscle contraction by anchoring the thin filaments and transmitting the force generated during contraction.- A band or anisotropic band: - The A band is a darker, more dense region in a sarcomere. - It contains both thin (actin) and thick (myosin) filaments. - The A band remains constant in length during muscle contraction.- Henson's line: - Henson's line, also known as the M line, is situated in the middle of the A band. - It consists of proteins that help to hold the thick filaments in place and maintain the structure of the sarcomere.- Sarcomere: - The sarcomere is the functional unit of a muscle fiber, responsible for contraction. - It is composed of various bands, lines, and filaments, including the A band, I band, Z line, and Henson's line. - Sarcomeres are organized in series within a muscle fiber, and their coordinated contraction results in the overall shortening of the muscle fiber and generation of force.In summary, the Membrane of Krause or Z line bisects the I band or isotropic band, dividing it into two equal halves and providing attachment sites for the thin filaments within the sarcomere.
Which of the following are principal cells of areolar connective tissue and secrete maximum amount of matrix - a)Macrophage
- b)Mast cells
- c)Fibroblast
- d)Histiocyte
Correct answer is option 'C'. Can you explain this answer?
Which of the following are principal cells of areolar connective tissue and secrete maximum amount of matrix
a)
Macrophage
b)
Mast cells
c)
Fibroblast
d)
Histiocyte
|
Jyoti Sengupta answered |
Areolar connective tissue is a loosely arranged connective tissue that is widely distributed in the Body and contains collagen fibres, reticular fibres and a few elastic fibres embedded in a thin, almost fluid-like ground substance.
Fibroblast - responsible for synthesizing (creating) the collagen, elastin, and reticular fibres of the tissue.
Fibroblast - responsible for synthesizing (creating) the collagen, elastin, and reticular fibres of the tissue.
Which of the following tissue is present at the joints between skull bones and makes them immovable- a)Cartilage
- b)White fibrous connective tissue
- c)Ligament
- d)Areolar
Correct answer is option 'B'. Can you explain this answer?
Which of the following tissue is present at the joints between skull bones and makes them immovable
a)
Cartilage
b)
White fibrous connective tissue
c)
Ligament
d)
Areolar
|
|
Rajat Kapoor answered |
Fibrous joints are connected by dense connective tissue, consisting mainly of collagen. These are fixed joints where bones are united by a layer of white fibrous tissue of varying thickness. In the skull the joints between the bones are called sutures. Such immovable joints are also referred to as synarthroses.
Which of the following is not an anticoagulant - a)Histamine
- b)Hirudin
- c)Heparin
- d)Citrate
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not an anticoagulant
a)
Histamine
b)
Hirudin
c)
Heparin
d)
Citrate
|
Nishtha Yadav answered |
Anticoagulants are substances that prevent blood from clotting. Histamine is not an anticoagulant. Here's why:
Explanation:
Histamine is a chemical compound that is released by immune cells in response to an injury or an allergen. It is involved in the inflammatory response and causes blood vessels to dilate and become more permeable. This allows white blood cells to move from the bloodstream into the tissues and fight off infections.
Although histamine can affect blood clotting in several ways, it is not considered an anticoagulant because it does not directly inhibit the coagulation cascade. In fact, histamine can promote platelet aggregation (clumping) and increase the risk of thrombosis (blood clots) in some cases.
On the other hand, the other options in the question are all anticoagulants:
- Hirudin is a protein found in the saliva of leeches that inhibits thrombin, a key enzyme in the coagulation cascade.
- Heparin is a glycosaminoglycan (a type of polysaccharide) that enhances the activity of antithrombin III, another enzyme that inhibits thrombin and other coagulation factors.
- Citrate is a salt that chelates (binds) calcium ions, which are necessary for the formation of fibrin, the protein network that forms blood clots.
In conclusion, histamine is not an anticoagulant because it does not directly inhibit blood clotting.
Explanation:
Histamine is a chemical compound that is released by immune cells in response to an injury or an allergen. It is involved in the inflammatory response and causes blood vessels to dilate and become more permeable. This allows white blood cells to move from the bloodstream into the tissues and fight off infections.
Although histamine can affect blood clotting in several ways, it is not considered an anticoagulant because it does not directly inhibit the coagulation cascade. In fact, histamine can promote platelet aggregation (clumping) and increase the risk of thrombosis (blood clots) in some cases.
On the other hand, the other options in the question are all anticoagulants:
- Hirudin is a protein found in the saliva of leeches that inhibits thrombin, a key enzyme in the coagulation cascade.
- Heparin is a glycosaminoglycan (a type of polysaccharide) that enhances the activity of antithrombin III, another enzyme that inhibits thrombin and other coagulation factors.
- Citrate is a salt that chelates (binds) calcium ions, which are necessary for the formation of fibrin, the protein network that forms blood clots.
In conclusion, histamine is not an anticoagulant because it does not directly inhibit blood clotting.
Long refractory period is present in - a)Smooth muscles
- b)Cardiac muscles
- c)Striated muscles
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
Long refractory period is present in
a)
Smooth muscles
b)
Cardiac muscles
c)
Striated muscles
d)
None of these
|
|
Rahul Bansal answered |
The inability of the heart to generate tetanic contractions is the result of the long absolute refractory period of cardiac muscle, defined as the period during and following an action potential when an excitable membrane cannot be re-excited. The refractory period lasts almost as long as the contraction.
Where would you find mast cells - a)Adipose tissue
- b)Yellow fibrous tissue
- c)Areolar tissue
- d)White fibrous tissue
Correct answer is option 'C'. Can you explain this answer?
Where would you find mast cells
a)
Adipose tissue
b)
Yellow fibrous tissue
c)
Areolar tissue
d)
White fibrous tissue
|
Dev Patel answered |
Answer: C. Areolar tissue
Explanation:
- Mast cells are immune cells that are found in various tissues throughout the body, particularly in connective tissues.
- Areolar tissue is a type of loose connective tissue that is composed of various cells, fibers, and ground substance. It is found in various parts of the body, such as beneath the skin, around blood vessels, and surrounding organs.
- Mast cells are abundant in areolar tissue as they play a crucial role in the body's immune response by releasing histamine and other inflammatory mediators during an allergic reaction or in response to injury or infection.
- Other tissues mentioned in the options, such as adipose tissue, yellow fibrous tissue, and white fibrous tissue, do not have a high concentration of mast cells compared to areolar tissue.
Explanation:
- Mast cells are immune cells that are found in various tissues throughout the body, particularly in connective tissues.
- Areolar tissue is a type of loose connective tissue that is composed of various cells, fibers, and ground substance. It is found in various parts of the body, such as beneath the skin, around blood vessels, and surrounding organs.
- Mast cells are abundant in areolar tissue as they play a crucial role in the body's immune response by releasing histamine and other inflammatory mediators during an allergic reaction or in response to injury or infection.
- Other tissues mentioned in the options, such as adipose tissue, yellow fibrous tissue, and white fibrous tissue, do not have a high concentration of mast cells compared to areolar tissue.
Blood brain barrier is formed by - a)Astrocytes
- b)Oligodendrocytes
- c)Glial cells
- d)Microglial cells
Correct answer is option 'A'. Can you explain this answer?
Blood brain barrier is formed by
a)
Astrocytes
b)
Oligodendrocytes
c)
Glial cells
d)
Microglial cells
|
Gopikas S answered |
Astrocytes contribute to induction and maintenance of the blood–brain barrier through paracrine interactions with the pericytes and endothelial cells. Astrocytes secrete classes of factors with either barrier-promoting or barrier-disrupting effects depending on signals received from neurons and/or endothelial cells.
The blood-brain barrier restricts the passage of pathogens, the diffusion of solutes in the blood, and large or hydrophilic molecules into the cerebrospinal fluid, while allowing the diffusion of hydrophobic molecules (O2, CO2, hormones) and small polar molecules.[4] Cells of the barrier actively transport metabolic products such as glucose across the barrier using specific transport proteins
The blood-brain barrier restricts the passage of pathogens, the diffusion of solutes in the blood, and large or hydrophilic molecules into the cerebrospinal fluid, while allowing the diffusion of hydrophobic molecules (O2, CO2, hormones) and small polar molecules.[4] Cells of the barrier actively transport metabolic products such as glucose across the barrier using specific transport proteins
A new born baby has the cold resisting device due to- a)Brown fat
- b)Adipose fat
- c)Fat rich in recticular tissue
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
A new born baby has the cold resisting device due to
a)
Brown fat
b)
Adipose fat
c)
Fat rich in recticular tissue
d)
None of these
|
|
Rashmitha.raawada answered |
Yes..this is really a good question Saurabh.In infants brown fat is nearly 5% and located on the back,along the upper half of the spine and toward the shoulders.It is present because it over comes lethal cold(hypothermia)which is a main cause for death of infants.Hope my answer is useful..any queries if I can,I will answer.
The erythropoiesis in the foetus occurs in- a)Spleen
- b)Liver
- c)Both (1) and (2)
- d)Bone marrow
Correct answer is option 'C'. Can you explain this answer?
The erythropoiesis in the foetus occurs in
a)
Spleen
b)
Liver
c)
Both (1) and (2)
d)
Bone marrow
|
Lavanya Menon answered |
Erythropoiesis is the process of formation of erythrocytes. It occurs within the red bone marrow. In the early fetus, erythropoiesis takes place in the mesodermal cells of the yolk sac. By the third or fourth month, erythropoiesis moves to the liver. After seven months, erythropoiesis occurs in the bone marrow.
Consider the following statements (i)- (iii), each with two blanks.
(i) Pseudostratified epithelium lines the ______ (1) tract while transitional epithelium lines the _____ (2) tract.
(ii) Lacunae of bones house _______ (3) while lacunae of cartilage contain _____ (4).
(iii) Tendon contains bundles of ______ (5) fibres and rows of _______ (6) cells between them.
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (6) in the statements?- a)(1)- respiratory; (2)- urinary; (5)- white; (6)- fibroblast
- b)(1)- urinary; (2)- respiratory; (3)- osteocytes; (4)- chondrocytes
- c)(3)- chondrocytes; (4)- osteocytes; (5)- yellow, (6)- fibroblast
- d)(1)- repiratory; (2)- urinary; (3)- chondrocytes; (4)- osteocytes
Correct answer is option 'A'. Can you explain this answer?
Consider the following statements (i)- (iii), each with two blanks.
(i) Pseudostratified epithelium lines the ______ (1) tract while transitional epithelium lines the _____ (2) tract.
(ii) Lacunae of bones house _______ (3) while lacunae of cartilage contain _____ (4).
(iii) Tendon contains bundles of ______ (5) fibres and rows of _______ (6) cells between them.
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (6) in the statements?
(i) Pseudostratified epithelium lines the ______ (1) tract while transitional epithelium lines the _____ (2) tract.
(ii) Lacunae of bones house _______ (3) while lacunae of cartilage contain _____ (4).
(iii) Tendon contains bundles of ______ (5) fibres and rows of _______ (6) cells between them.
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (6) in the statements?
a)
(1)- respiratory; (2)- urinary; (5)- white; (6)- fibroblast
b)
(1)- urinary; (2)- respiratory; (3)- osteocytes; (4)- chondrocytes
c)
(3)- chondrocytes; (4)- osteocytes; (5)- yellow, (6)- fibroblast
d)
(1)- repiratory; (2)- urinary; (3)- chondrocytes; (4)- osteocytes
|
Ajay Yadav answered |
(i) Pseudostratified epithelium lines the (1) 'respiratory' tract while the transitional epithelium lines the (2) 'urinary' tract.
(ii) Lacunae of bones house (3) 'osteocytes' while lacunae of cartilage contain (4) 'chondrocytes'.
(iii) Tendons contain bundles of (5) 'white' fibres and rows of (6) 'fibroblast' cells.
(ii) Lacunae of bones house (3) 'osteocytes' while lacunae of cartilage contain (4) 'chondrocytes'.
(iii) Tendons contain bundles of (5) 'white' fibres and rows of (6) 'fibroblast' cells.
Consider the following statement (i)-(iii) and select the correct option stating which ones are true (T) and which one are false (F)
(i) Keratinised stratified squamous epithelium covers moist surfaces like buccal cavity
(ii) Fibroblasts store fat in adipose tissue
(iii) Urinary bladder is lined by a stratified epithelium.- a)(i) (ii) (iii)
F T T - b)(i) (ii) (iii)
T F T - c)(i) (ii) (iii)
T F F - d)(i) (ii) (iii)
T T F
Correct answer is option 'B'. Can you explain this answer?
Consider the following statement (i)-(iii) and select the correct option stating which ones are true (T) and which one are false (F)
(i) Keratinised stratified squamous epithelium covers moist surfaces like buccal cavity
(ii) Fibroblasts store fat in adipose tissue
(iii) Urinary bladder is lined by a stratified epithelium.
(i) Keratinised stratified squamous epithelium covers moist surfaces like buccal cavity
(ii) Fibroblasts store fat in adipose tissue
(iii) Urinary bladder is lined by a stratified epithelium.
a)
(i) (ii) (iii)
F T T
F T T
b)
(i) (ii) (iii)
T F T
T F T
c)
(i) (ii) (iii)
T F F
T F F
d)
(i) (ii) (iii)
T T F
T T F
|
|
Riya Banerjee answered |
Non keratinized stratified squamous epithelium covers moist surfaces like buccal cavity, pharynx, vagina, cervix, etc. Adipocytes store fat in adipose tissue. Urinary bladder lined by transitional epithelium.
Pancreatic juice is delivered to the duodenum by the _______- a)pancreatic duct
- b)common bile duct
- c)parotid duct
- d)hepatic duct
Correct answer is option 'B'. Can you explain this answer?
Pancreatic juice is delivered to the duodenum by the _______
a)
pancreatic duct
b)
common bile duct
c)
parotid duct
d)
hepatic duct
|
Preeti Iyer answered |
Pancreatic juice is first delivered from the pancreas to the common bile duct via the pancreatic duct. The common bile duct, which also receives bile from the gall bladder delivers its contents into the duodenum.
Old RBCs are destroyed in 'tissue macrophage system'. In the breakdown of haemoglobin bilirubin is formed from - a)Globin part
- b)Porphyrin
- c)Mainly from globin and a part from haeme
- d)lron part
Correct answer is option 'B'. Can you explain this answer?
Old RBCs are destroyed in 'tissue macrophage system'. In the breakdown of haemoglobin bilirubin is formed from
a)
Globin part
b)
Porphyrin
c)
Mainly from globin and a part from haeme
d)
lron part
|
Geetika Shah answered |
Bilirubin consists of an open chain tetrapyrrole. It is formed by oxidative cleavage of a porphyrin in heme, which affords biliverdin. Biliverdin is reduced to bilirubin. After conjugation with glucuronic acid, bilirubin is excreted.
Sprain is caused by- a)Excessive pulling of tendons
- b)Excessive pulling of muscles
- c)Excessive pulling of ligaments in which some fibres of supporting ligaments are ruptured
- d)Too much stretching and tearing of all ligamens
Correct answer is option 'C'. Can you explain this answer?
Sprain is caused by
a)
Excessive pulling of tendons
b)
Excessive pulling of muscles
c)
Excessive pulling of ligaments in which some fibres of supporting ligaments are ruptured
d)
Too much stretching and tearing of all ligamens
|
|
Rashmitha.raawada answered |
Generally sprain occurs due to injury (twisted ankles). This happens when your joint moves in an unnatural way and the ligaments get moved in an unruly fashion.
Diapedesis means - a)Movement of the food in gut
- b)Formation of WBC
- c)The process by which monocytes and neutrophil squeeze through thin capillary wall
- d)Formation of RBC
Correct answer is option 'C'. Can you explain this answer?
Diapedesis means
a)
Movement of the food in gut
b)
Formation of WBC
c)
The process by which monocytes and neutrophil squeeze through thin capillary wall
d)
Formation of RBC
|
|
Mahesh Mahajan answered |
Correct option is C, because during diapedesis WBCs (monocytes, neutrophils) rush out through capillary walls except RBCs and Proteins (unable to rush) and fill in as interstitial fluid (later called lymph).
Main function is to carry WBCs at the place of injury.
Main function is to carry WBCs at the place of injury.
Which of the following tissue connect bones at joints and enable us to move and rotate our neck, limbs, fingers comfortably- a)Tendon
- b)Cartilage
- c)Ligament
- d)White fibrous cartilage
Correct answer is option 'C'. Can you explain this answer?
Which of the following tissue connect bones at joints and enable us to move and rotate our neck, limbs, fingers comfortably
a)
Tendon
b)
Cartilage
c)
Ligament
d)
White fibrous cartilage
|
|
Preeti Iyer answered |
A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable. Ligaments can be found connecting most of the bones in the body. The function of a ligament is to provide a passive limit to amount of movement between your bones.
The connective tissue which mainly consists of yellow elastic fibres binds the bones together is known as - a)Ligament
- b)Tendon
- c)Reticular fibres
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
The connective tissue which mainly consists of yellow elastic fibres binds the bones together is known as
a)
Ligament
b)
Tendon
c)
Reticular fibres
d)
None of these
|
Nipuns Institute answered |
The correct answer is A: Ligament.Explanation:- Ligaments are connective tissues that consist mainly of yellow elastic fibers. They play an important role in binding bones together, providing stability and support to joints.- They are composed of collagen fibers, which provide strength and flexibility, and elastin fibers, which allow for elasticity and shock absorption.- Ligaments help to maintain the structural integrity of joints, prevent excessive movement or dislocation, and facilitate controlled movement between bones.On the other hand:- Tendons are also connective tissues, but they connect muscles to bones, allowing for the transfer of force and movement.- Reticular fibers are a type of fiber found in connective tissue, but they primarily form a supportive network within organs and tissues, rather than connecting bones together.
The heparin, histamine and serotonin are secreted by- a)Lymphoid celle
- b)Mast cells
- c)Fibroblasts
- d)Macrophages
Correct answer is option 'B'. Can you explain this answer?
The heparin, histamine and serotonin are secreted by
a)
Lymphoid celle
b)
Mast cells
c)
Fibroblasts
d)
Macrophages
|
Avantika Chavan answered |
Heparin, histamine, and serotonin are secreted by Mast cells.
Mast cells are a type of white blood cell that plays a role in the body's immune system. They are found in connective tissue and mucous membranes, and are especially concentrated in areas of the body that are prone to infections, such as the nose, throat, and lungs. Mast cells are best known for their role in allergic reactions, but they also play a role in inflammation, wound healing, and protection against pathogens.
Heparin:
Heparin is a type of anticoagulant that prevents blood from clotting. Mast cells secrete heparin into the bloodstream to prevent blood clots from forming around an injury or inflammation.
Histamine:
Histamine is a chemical that is involved in the body's immune response. When mast cells are activated, they release histamine into the surrounding tissue. Histamine causes blood vessels to dilate, which increases blood flow to the area, and also causes inflammation, which helps to fight infections.
Serotonin:
Serotonin is a neurotransmitter that is involved in regulating mood, appetite, and sleep. Mast cells also secrete serotonin, which can cause blood vessels to constrict, reducing blood flow to the area. This can help to limit inflammation and prevent the spread of infections.
In conclusion, Mast cells are responsible for secreting heparin, histamine, and serotonin. These chemicals play a crucial role in the body's immune response, helping to fight infections and promote healing.
Mast cells are a type of white blood cell that plays a role in the body's immune system. They are found in connective tissue and mucous membranes, and are especially concentrated in areas of the body that are prone to infections, such as the nose, throat, and lungs. Mast cells are best known for their role in allergic reactions, but they also play a role in inflammation, wound healing, and protection against pathogens.
Heparin:
Heparin is a type of anticoagulant that prevents blood from clotting. Mast cells secrete heparin into the bloodstream to prevent blood clots from forming around an injury or inflammation.
Histamine:
Histamine is a chemical that is involved in the body's immune response. When mast cells are activated, they release histamine into the surrounding tissue. Histamine causes blood vessels to dilate, which increases blood flow to the area, and also causes inflammation, which helps to fight infections.
Serotonin:
Serotonin is a neurotransmitter that is involved in regulating mood, appetite, and sleep. Mast cells also secrete serotonin, which can cause blood vessels to constrict, reducing blood flow to the area. This can help to limit inflammation and prevent the spread of infections.
In conclusion, Mast cells are responsible for secreting heparin, histamine, and serotonin. These chemicals play a crucial role in the body's immune response, helping to fight infections and promote healing.
Spongy or cancellous bone is present in vertebrae, ribs, skull, epiphysis of long bones, they have- a)Haversian canals
- b)Trabeculae
- c)Red bone marrow
- d)Both (2) and (3)
Correct answer is option 'D'. Can you explain this answer?
Spongy or cancellous bone is present in vertebrae, ribs, skull, epiphysis of long bones, they have
a)
Haversian canals
b)
Trabeculae
c)
Red bone marrow
d)
Both (2) and (3)
|
|
Suresh Reddy answered |
Spongy (cancellous) bone is lighter and less dense than compact bone. Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to receive their blood supply.
All the following statements are correct, except
- a)Hyaline cartilage is lacking fibres and is present in sternum, hyoid and ribs
- b)White fibrous cartilage is strongest and is present in the intervertebral disc
- c)Elastic cartilage is present in the tip of nose and ear pinna
- d)Calcified cartilage is not present in the pubis of pelvic girdle of frog
Correct answer is option 'A'. Can you explain this answer?
All the following statements are correct, except
a)
Hyaline cartilage is lacking fibres and is present in sternum, hyoid and ribs
b)
White fibrous cartilage is strongest and is present in the intervertebral disc
c)
Elastic cartilage is present in the tip of nose and ear pinna
d)
Calcified cartilage is not present in the pubis of pelvic girdle of frog
|
|
Geetika Shah answered |
The statement "Hyaline cartilage is lacking fibers and is present in sternum, hyoid and ribs" is incorrect:
- Explanation: Hyaline cartilage is a type of cartilage that contains a considerable amount of collagen and is found in the ribs, nose, larynx, and trachea. It is the most common type of cartilage in the human body.
Here are some other types of cartilage and where they are found in the body:
- Fibrocartilage: Found in the intervertebral discs, joint capsules, and ligaments. It is a mixture of white fibrous tissue and cartilaginous tissue.
- Elastic cartilage: Found in the external ear, epiglottis, and larynx. It is a resilient cartilage that provides flexibility and is resistant to pressure.
- White fibrous cartilage: Occurs in the intervertebral discs.
Which of these describes the skin of frog?- a)Thick, leathery
- b)Smooth, slippery
- c)Hard, dry
- d)Thin, membranous
Correct answer is option 'B'. Can you explain this answer?
Which of these describes the skin of frog?
a)
Thick, leathery
b)
Smooth, slippery
c)
Hard, dry
d)
Thin, membranous
|
Kailas Patil answered |
SKIN OF FROG IS SMOOTH FOR EASY DIFFUSION OF GASES AND SLIPPERY DUE TO THE PRESENCE OF MUCUS .
MUCUS HELP TO MOIST TH SKIN SURFACE WHICH MAKE DIFFUSION EFFICIENT.
The heart of cockroach is- a)13-chambered
- b)29-chambered
- c)9-chambered
- d)6-chambered
Correct answer is option 'A'. Can you explain this answer?
The heart of cockroach is
a)
13-chambered
b)
29-chambered
c)
9-chambered
d)
6-chambered
|
Surbhi Das answered |
Cockroaches have multi-chambered hearts shaped like tubes that are much more resistant to failure than human hearts. ... But instead of shaping the heart as a tube, they've created the chambers in a series of concentric spheres like an onion.
Male and female cockroach differ due to the presence or absence of- a)Anal cerci and anal style
- b)Anal style
- c)Anal cerci
- d)Anal setae
Correct answer is option 'B'. Can you explain this answer?
Male and female cockroach differ due to the presence or absence of
a)
Anal cerci and anal style
b)
Anal style
c)
Anal cerci
d)
Anal setae
|
|
Rajeev Menon answered |
Correct answer is option 'B
- Anal cerci are a pair of appendages at the end of the abdomen, arising from near the 10th segment of the body of a cockroach. These are present in both males and females. Anal cerci are important sense organs of the organism as they are wind sensitive and detect vibrations.
- The abdomen is broader in female than in the male. In male in addition to cerci, the 9th sternum bears a short unjointed anal stylus, which is absent in females.
One of the following salt predominates in bone matrix- a)Sodium chloride
- b)Magnesium phosphate
- c)Calcium carbonate
- d)Calcium phosphate
Correct answer is option 'D'. Can you explain this answer?
One of the following salt predominates in bone matrix
a)
Sodium chloride
b)
Magnesium phosphate
c)
Calcium carbonate
d)
Calcium phosphate
|
|
Vishal Kumar answered |
The bone matrix has 60-70% mineral salts like calcium phosphate (main), calcium carbonate, magnesium phosphate, chloride and fluoride.
Erector pili muscles are - a)Voluntary, multiunit
- b)Involuntary, multiunit
- c)Involuntary, single unit
- d)Voluntary, single unit
Correct answer is option 'B'. Can you explain this answer?
Erector pili muscles are
a)
Voluntary, multiunit
b)
Involuntary, multiunit
c)
Involuntary, single unit
d)
Voluntary, single unit
|
Vivek Patel answered |
Erector pili muscles are involuntary.
The arrector pili muscles are small muscles attached to hair follicles in mammals. Contraction of these muscles causes the hairs to stand on end. Each arrector pili is composed of a bundle of smooth muscle fibres, which attach to several follicles (a follicular unit) and is innervated by the sympathetic branch of the autonomic nervous system. The contraction of the muscle is, therefore, involuntary stresses such as cold, fear etc., may stimulate the sympathetic nervous system and thus, cause contraction, but the muscle is not under conscious control.
The arrector pili muscles are small muscles attached to hair follicles in mammals. Contraction of these muscles causes the hairs to stand on end. Each arrector pili is composed of a bundle of smooth muscle fibres, which attach to several follicles (a follicular unit) and is innervated by the sympathetic branch of the autonomic nervous system. The contraction of the muscle is, therefore, involuntary stresses such as cold, fear etc., may stimulate the sympathetic nervous system and thus, cause contraction, but the muscle is not under conscious control.
In central nervous system the myelin sheath around the nerve fibre is formed by the spiral wrapping of- a)Neurilemma
- b)Schwann cells
- c)Oligodendrocytes
- d)Neurolemmocytes
Correct answer is option 'C'. Can you explain this answer?
In central nervous system the myelin sheath around the nerve fibre is formed by the spiral wrapping of
a)
Neurilemma
b)
Schwann cells
c)
Oligodendrocytes
d)
Neurolemmocytes
|
|
꧁༒gundagi༒꧂ ꧁༒विरेश༒꧂ answered |
Each myelin sheath is formed by the concentric wrapping of an oligodendrocyte (CNS) or Schwann cell (PNS) process (a limb-like extension from the cell body) around the axon. Myelin reduces the capacitance of the axonal membrane.
Transverse canal, that joins longitudinal Haversian canals is known as Volkman's canal. It is a characteristic feature of bone of- a)Frog
- b)Fish
- c)Toad
- d)Rabbit
Correct answer is option 'D'. Can you explain this answer?
Transverse canal, that joins longitudinal Haversian canals is known as Volkman's canal. It is a characteristic feature of bone of
a)
Frog
b)
Fish
c)
Toad
d)
Rabbit
|
Tanvi Roy answered |
Volkmann’s canals are any of the small channels in the bone that transmit blood vessels from the periosteum (a dense layer of vascular connective tissue) into the bone and that communicate with the Haversian canals (minute tubes which form a network in bone and contains blood vessels). The perforating canals provide energy and nourishing elements for osteons (cylindrical structures that contain mineral matrix and osteocytes which transport blood).
Anaemia is caused due to deficiency of - a)Folic acid
- b)Vitamin B12
- c)Haemoglobin
- d)All of these
Correct answer is option 'D'. Can you explain this answer?
Anaemia is caused due to deficiency of
a)
Folic acid
b)
Vitamin B12
c)
Haemoglobin
d)
All of these
|
|
Suseela Goli answered |
VitB12 and folic acid required for maturation of rbc.Haemoglobin required for transporting co2 and o2.
Nucleus Pulposus is present in - a)Intervertebral disc
- b)Kidney
- c)Testis
- d) Cartilage
Correct answer is option 'A'. Can you explain this answer?
Nucleus Pulposus is present in
a)
Intervertebral disc
b)
Kidney
c)
Testis
d)
Cartilage
|
|
Preeti Iyer answered |
The nucleus pulposus (NP) is a rounded region located within the center of the Intervertebral Disc. The NP is thickest from superior to inferior in the lumbar region, followed in thickness by the cervical region; it is the thinnest in the thoracic region.
The bone of a mammal contains Haversian canals which are interconnected by transverse canals, known as- a)Canaliculi
- b)Volksman canal
- c)Trabeculae
- d)bidder's canal
Correct answer is option 'B'. Can you explain this answer?
The bone of a mammal contains Haversian canals which are interconnected by transverse canals, known as
a)
Canaliculi
b)
Volksman canal
c)
Trabeculae
d)
bidder's canal
|
|
Shalini... answered |
The Haversian canal contains small blood vessels responsible for the blood supply to osteocytes (individual bone cells). A Haversian canal and its lamellae and osteocytes form a Haversian system. The lamellae between Haversian system is called as interstitial lamellae. The Haversian canals are interconnected by transverse channels termed as the Volkmann's canals Thus, option B is right ans..
The number of abdominal segments in male and female cockroach is- a)9, 9
- b)9, 10
- c)8, 10
- d)10, 10
Correct answer is option 'D'. Can you explain this answer?
The number of abdominal segments in male and female cockroach is
a)
9, 9
b)
9, 10
c)
8, 10
d)
10, 10
|
|
Suresh Reddy answered |
The abdomen in a male and female cockroach is made up of 10 segments. The 7th, 8th and 9th sterna form a genital pouch in females. In males, the genital pouch is present at the hind end of the abdomen. The male cockroach has thread-like anal styles, which are missing in the female cockroach.
Which of the following is incorrect- a)Increase in RBC count is polycythemia
- b)Decrease in leucocyte count is called as leucopenia
- c)Decrease in Thrombocyte count is called as Thrombocytopenia
- d)Purpura a group of bleeding disorders is due to increase in platelet count
Correct answer is option 'D'. Can you explain this answer?
Which of the following is incorrect
a)
Increase in RBC count is polycythemia
b)
Decrease in leucocyte count is called as leucopenia
c)
Decrease in Thrombocyte count is called as Thrombocytopenia
d)
Purpura a group of bleeding disorders is due to increase in platelet count
|
|
Nandini Iyer answered |
Explanation:A: Increase in RBC count is polycythemia- This statement is correct because polycythemia refers to an increase in the number of red blood cells (RBCs) in the blood, which can lead to increased blood viscosity and the possibility of blood clots.B: Decrease in leucocyte count is called as leucopenia- This statement is also correct. Leucopenia refers to a decrease in the number of white blood cells (leucocytes) in the blood, which can make a person more susceptible to infections.C: Decrease in Thrombocyte count is called as Thrombocytopenia- This statement is correct as well. Thrombocytopenia refers to a decrease in the number of platelets (thrombocytes) in the blood, which can lead to issues with blood clotting and an increased risk of bleeding.D: Purpura a group of bleeding disorders is due to increase in platelet count- This statement is incorrect. Purpura is a group of bleeding disorders characterized by the appearance of purple or red spots on the skin due to bleeding underneath the skin. However, purpura is not caused by an increase in platelet count; rather, it is usually caused by a decrease in platelet count (thrombocytopenia), issues with blood clotting factors, or damage to blood vessels.
Mammalian pinna is supported by - a)hyaline cartilage
- b)elastic cartilage
- c)calcified cartilage
- d)white fibrous connective tissue
Correct answer is option 'B'. Can you explain this answer?
Mammalian pinna is supported by
a)
hyaline cartilage
b)
elastic cartilage
c)
calcified cartilage
d)
white fibrous connective tissue
|
Lead Academy answered |
Answer: B. Elastic Cartilage
The mammalian pinna, also known as the external ear or auricle, is supported by elastic cartilage. Here are the reasons why:
- Elastic cartilage: This type of cartilage is flexible and resilient, allowing the pinna to maintain its shape while also being able to bend and move without damage. Elastic cartilage contains elastic fibers, which provide the necessary flexibility for the pinna to perform its functions.
- Hyaline cartilage: While hyaline cartilage is the most common type of cartilage in the body, it is not found in the pinna. Hyaline cartilage is found in areas such as the nose, trachea, and articular surfaces of joints, but it is not as flexible as elastic cartilage and would not provide the necessary support for the pinna.
- Calcified cartilage: Calcified cartilage is a type of cartilage that has become hardened due to the deposition of calcium salts within its matrix. This type of cartilage is found in areas such as the growth plates of bones, but it would be too rigid to support the flexible structure of the pinna.
- White fibrous connective tissue: This type of tissue is composed mainly of collagen fibers, providing strength and support to various structures within the body. However, it is not the primary supportive tissue in the pinna, as it does not have the same level of flexibility as elastic cartilage.
In summary, the mammalian pinna is supported by elastic cartilage, which provides the flexibility and resilience necessary for the pinna's functions in hearing and sound localization.
Colloidal protein gelatin is obtained by boiling- a)Collagen
- b)Elastin
- c)Both (1) & (2)
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
Colloidal protein gelatin is obtained by boiling
a)
Collagen
b)
Elastin
c)
Both (1) & (2)
d)
None of these
|
Moumita Chakraborty answered |
The type A gelatin is produced by boiling collagen in an acidic solution while type B gelatin is produced by boiling it into an alkaline solution. Mostly animal parts are used for making gelatin which comes from cattle and pigs or sometimes leftover from meat and leather processing.
Read the following statements and select the correct option:
Statement 1- Bone and cartilage are rigid connective tissues
Statement 2- Blood is a connective tissue with fluid (plasma) matrix.- a)Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
- b)Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
- c)Statement 1 is correct and statement 2 is incorrect.
- d)Both statements 1 and 2 are incorrect.
Correct answer is option 'B'. Can you explain this answer?
Read the following statements and select the correct option:
Statement 1- Bone and cartilage are rigid connective tissues
Statement 2- Blood is a connective tissue with fluid (plasma) matrix.
Statement 1- Bone and cartilage are rigid connective tissues
Statement 2- Blood is a connective tissue with fluid (plasma) matrix.
a)
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
b)
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
c)
Statement 1 is correct and statement 2 is incorrect.
d)
Both statements 1 and 2 are incorrect.
|
|
Ajay Yadav answered |
Bone and cartilage are rigid connective tissues. Bones consist of matrix which is hard and non-pliable and is rich in calcium salts and collagen fibres. This gives bone its strength. The intercellular material of cartilage is solid and pliable and resists compression. Blood is a fluid connective tissue consisting of plasma, RBCS, WBCs and platelets.
Lining of intestine of man is- a)Brush bordered
- b)Ciliated
- c)Non-keratinised
- d)Keratinised
Correct answer is option 'A'. Can you explain this answer?
Lining of intestine of man is
a)
Brush bordered
b)
Ciliated
c)
Non-keratinised
d)
Keratinised
|
|
Ajay Yadav answered |
The outer surface of columnar epithelial cells lining the intestine of man is brush-bordered. It is made up of microvilli that greatly increase the surface area for absorption.
Simple cuboidal epithelium lines all the following structures except the ___________.- a)Ovary
- b)Pancreatic ducts
- c)Thyroid follicles
- d)Fallopian tube
Correct answer is option 'D'. Can you explain this answer?
Simple cuboidal epithelium lines all the following structures except the ___________.
a)
Ovary
b)
Pancreatic ducts
c)
Thyroid follicles
d)
Fallopian tube
|
|
Ajay Yadav answered |
Ciliated columnar epithelium lines the Fallopian tubes.
Pick the odd one in each series and select the correct option:
(i) Areolar tissue, blood neuron, tendon
(ii) Salivary gland, gastric gland, tear gland, thyroid gland
(iii) Adrenal gland, sweat gland, milk gland, oil gland- a)(i) Areolar tissue; (ii) Gastric gland; (ii) Milk gland
- b)(i) Blood; (ii)- Tear gland; (ii) Oil glamd
- c)(i) Tendon; (ii) Salivary gland; (iii) Sweat gland
- d)(i) Neuron; (ii) Thyroid gland; (iii) Adrenal gland
Correct answer is option 'D'. Can you explain this answer?
Pick the odd one in each series and select the correct option:
(i) Areolar tissue, blood neuron, tendon
(ii) Salivary gland, gastric gland, tear gland, thyroid gland
(iii) Adrenal gland, sweat gland, milk gland, oil gland
(i) Areolar tissue, blood neuron, tendon
(ii) Salivary gland, gastric gland, tear gland, thyroid gland
(iii) Adrenal gland, sweat gland, milk gland, oil gland
a)
(i) Areolar tissue; (ii) Gastric gland; (ii) Milk gland
b)
(i) Blood; (ii)- Tear gland; (ii) Oil glamd
c)
(i) Tendon; (ii) Salivary gland; (iii) Sweat gland
d)
(i) Neuron; (ii) Thyroid gland; (iii) Adrenal gland
|
|
Sameer Roy answered |
i) Areolar tissue, blood neuron, tendon:
The odd one out in this series is 'blood neuron'.
- Areolar tissue is a loose connective tissue that is found in various parts of the body. It provides support and flexibility to organs and holds them in place.
- Tendon is a type of connective tissue that connects muscle to bone, allowing for movement and transmitting forces from muscle to bone.
- Blood is a fluid connective tissue that is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body. Neurons, on the other hand, are specialized cells of the nervous system and are not considered a connective tissue.
ii) Salivary gland, gastric gland, tear gland, thyroid gland:
The odd one out in this series is 'tear gland'.
- Salivary glands produce saliva, which helps in the digestion of food.
- Gastric glands are found in the stomach and secrete gastric juice, which aids in the digestion of proteins.
- Thyroid glands produce hormones that regulate metabolism. Tear glands, also known as lacrimal glands, produce tears that help in lubricating and protecting the eyes. Unlike the other glands mentioned, tear glands are not involved in digestion or metabolism.
iii) Adrenal gland, sweat gland, milk gland, oil gland:
The odd one out in this series is 'milk gland'.
- Adrenal glands produce hormones such as adrenaline and cortisol, which are involved in the body's response to stress and metabolism regulation.
- Sweat glands are responsible for producing sweat, which helps to cool down the body and regulate body temperature.
- Oil glands, also known as sebaceous glands, produce sebum, an oily substance that helps to moisturize and protect the skin and hair. Milk glands, on the other hand, are specific to female mammals and are responsible for producing milk to nourish their young. They are not found in other animals or in males.
The odd one out in this series is 'blood neuron'.
- Areolar tissue is a loose connective tissue that is found in various parts of the body. It provides support and flexibility to organs and holds them in place.
- Tendon is a type of connective tissue that connects muscle to bone, allowing for movement and transmitting forces from muscle to bone.
- Blood is a fluid connective tissue that is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body. Neurons, on the other hand, are specialized cells of the nervous system and are not considered a connective tissue.
ii) Salivary gland, gastric gland, tear gland, thyroid gland:
The odd one out in this series is 'tear gland'.
- Salivary glands produce saliva, which helps in the digestion of food.
- Gastric glands are found in the stomach and secrete gastric juice, which aids in the digestion of proteins.
- Thyroid glands produce hormones that regulate metabolism. Tear glands, also known as lacrimal glands, produce tears that help in lubricating and protecting the eyes. Unlike the other glands mentioned, tear glands are not involved in digestion or metabolism.
iii) Adrenal gland, sweat gland, milk gland, oil gland:
The odd one out in this series is 'milk gland'.
- Adrenal glands produce hormones such as adrenaline and cortisol, which are involved in the body's response to stress and metabolism regulation.
- Sweat glands are responsible for producing sweat, which helps to cool down the body and regulate body temperature.
- Oil glands, also known as sebaceous glands, produce sebum, an oily substance that helps to moisturize and protect the skin and hair. Milk glands, on the other hand, are specific to female mammals and are responsible for producing milk to nourish their young. They are not found in other animals or in males.
Read the following statements and select the correct ones.
(i) In simple cuboidal epithelium, nuclei are rounded and lie in the centre of the cells
(ii) Non-keratinised epithelium is impermeable to water.
(iii) Yellow elastic fibrocartilage makes cartilage flexible
(iv) Areolar tissue forms a shock absorbing cushion around the eye balls and kidneys.
- a)(i) and (iii)
- b)(i) and (ii)
- c)(iii) and (iv)
- d)(ii) and (iv)
Correct answer is option 'A'. Can you explain this answer?
Read the following statements and select the correct ones.
(i) In simple cuboidal epithelium, nuclei are rounded and lie in the centre of the cells
(ii) Non-keratinised epithelium is impermeable to water.
(iii) Yellow elastic fibrocartilage makes cartilage flexible
(iv) Areolar tissue forms a shock absorbing cushion around the eye balls and kidneys.
(i) In simple cuboidal epithelium, nuclei are rounded and lie in the centre of the cells
(ii) Non-keratinised epithelium is impermeable to water.
(iii) Yellow elastic fibrocartilage makes cartilage flexible
(iv) Areolar tissue forms a shock absorbing cushion around the eye balls and kidneys.
a)
(i) and (iii)
b)
(i) and (ii)
c)
(iii) and (iv)
d)
(ii) and (iv)
|
|
Ajay Yadav answered |
Keratinized epithelium is impermeable to water. Adipose tissue forms a shock absorbing cushion around the eye balls and kidneys. So, option ii and 1v are wrong. In simple cuboidal epithelium where the length of the cell is equal to the breadth, the nucleus is conspicuous and centrally placed. Yellow elastin fibre provides flexibility, which is a component of the cartilage matrix along with collagen and other components.
So, the correct answer is '(i) and (iii)'
Mammalian bone differs from cartilage in the presence of _______________.- a)lymph vessels
- b)collagen
- c)blood vessels
- d)Haversian canals
Correct answer is option 'D'. Can you explain this answer?
Mammalian bone differs from cartilage in the presence of _______________.
a)
lymph vessels
b)
collagen
c)
blood vessels
d)
Haversian canals
|
|
Ajay Yadav answered |
Haversian canal is a small canal that ramify throughout compact bone. It forms a central tube around which are alternate layers of bone matrix and lacunae containing bone cells. The lacunae are linked by minute channels called canaliculi.
In frogs, chyme is passed to the ______- a)duodenum
- b)ileum
- c)jejunum
- d)cloaca
Correct answer is option 'A'. Can you explain this answer?
In frogs, chyme is passed to the ______
a)
duodenum
b)
ileum
c)
jejunum
d)
cloaca
|
|
Geetika Shah answered |
Duodenum is the first part of the small intestine. Food ingested by the frog is churned with bile, pancreatic juices and hydrochloric acid in the stomach to form an acidic mixture called chyme. This is passed to the duodenum.
Can you explain the answer of this question below:Cockroach mainly excretes
- A:
Ammonia
- B:
Amino acid
- C:
Uric acid
- D:
Urea
The answer is c.
Cockroach mainly excretes
Ammonia
Amino acid
Uric acid
Urea
|
|
Anjali Iyer answered |
Insects including cockroach excrete nitrogenous waste in the form of soluble potassium urate which is liberated into the haemolymph and taken up by the cells lining the Malpighian tubules. The tubules facilitate the absorption of urate by stirring up the blood. In the cells of the tubule the potassium urate reacts with water and carbon dioxide(from respiration) to form potassium hydrogen carbonate and uric acid. The former is absorbed back into the blood, but the later is excreted.
Areolar tissue connects- a)Muscles with muscles
- b)Bone with muscles
- c)The skin with muscles
- d)Bone with bone
Correct answer is option 'C'. Can you explain this answer?
Areolar tissue connects
a)
Muscles with muscles
b)
Bone with muscles
c)
The skin with muscles
d)
Bone with bone
|
|
Neha Joshi answered |
Explanation:Areolar tissue, also known as loose connective tissue, serves a variety of functions in the body. One of its primary functions is to connect, support, and cushion various structures. In this context, the correct answer is:- C: The skin with musclesAreolar tissue is found beneath the skin, connecting the epidermis and dermis layers with the underlying muscles. This connection allows for flexibility, movement, and protection of the body's organs and tissues. Additionally, areolar tissue plays a role in:- Providing structural support to blood vessels, nerves, and lymphatic vessels- Supplying nutrients and oxygen to surrounding cells- Assisting in the immune response by housing immune cells, such as macrophages and mast cellsThe other options listed are not the primary functions of areolar tissue:- A: Muscles with muscles - This is typically the role of fascia or connective tissue surrounding muscle fibers.- B: Bone with muscles - This connection is primarily made through tendons, which attach muscles to bones.- D: Bone with bone - This is the role of ligaments, which connect bones to other bones at joints.
Protein found in cartilage- a)Ossein
- b)Chondrin
- c)Myosin
- d)Elastin
Correct answer is option 'B'. Can you explain this answer?
Protein found in cartilage
a)
Ossein
b)
Chondrin
c)
Myosin
d)
Elastin
|
|
Pooja Shah answered |
Protein Found in Cartilage:
The correct answer is B: Chondrin.
Explanation:- Chondrin is a protein found in cartilage, which is a connective tissue present in various parts of the body, such as joints, ears, and nose.
- Cartilage is a flexible and strong tissue that provides support, cushioning, and protection to various structures in the body.
- Chondrin is an essential component of the extracellular matrix in cartilage, and it helps maintain the structural integrity and functioning of cartilage tissue.
Which one of the following contains the largest quantity of extra-cellular material - a)Striated muscle
- b)Areolar tissue
- c)Stratified epithelium
- d)Myelinated nerve fibres
Correct answer is option 'B'. Can you explain this answer?
Which one of the following contains the largest quantity of extra-cellular material
a)
Striated muscle
b)
Areolar tissue
c)
Stratified epithelium
d)
Myelinated nerve fibres
|
|
Jyoti Sengupta answered |
Answer: B. Areolar tissue
Explanation:
- Striated muscle: This type of muscle is mainly found in skeletal muscles, and its primary function is to facilitate movement. It contains a limited amount of extracellular material as it is composed mainly of muscle fibers and is packed densely.
- Areolar tissue: This is a type of loose connective tissue that is found between various organs and tissues in the body. It is characterized by a large amount of extracellular material, which includes fibers (collagen, reticular, and elastic) and ground substance. This tissue helps to provide support, flexibility, and cushioning to the surrounding structures, making it the correct answer.
- Stratified epithelium: This is a type of epithelial tissue composed of multiple layers of cells, which functions mainly as a protective barrier. It contains very little extracellular material, as the cells are tightly packed together.
- Myelinated nerve fibers: These are nerve fibers surrounded by a myelin sheath, which is a fatty substance that insulates the fibers and allows for faster transmission of nerve impulses. The extracellular material in this case is limited to the small spaces between the fibers.
In summary, areolar tissue contains the largest quantity of extracellular material among the given options, as it serves to provide support and flexibility to various organs and tissues in the body.
Explanation:
- Striated muscle: This type of muscle is mainly found in skeletal muscles, and its primary function is to facilitate movement. It contains a limited amount of extracellular material as it is composed mainly of muscle fibers and is packed densely.
- Areolar tissue: This is a type of loose connective tissue that is found between various organs and tissues in the body. It is characterized by a large amount of extracellular material, which includes fibers (collagen, reticular, and elastic) and ground substance. This tissue helps to provide support, flexibility, and cushioning to the surrounding structures, making it the correct answer.
- Stratified epithelium: This is a type of epithelial tissue composed of multiple layers of cells, which functions mainly as a protective barrier. It contains very little extracellular material, as the cells are tightly packed together.
- Myelinated nerve fibers: These are nerve fibers surrounded by a myelin sheath, which is a fatty substance that insulates the fibers and allows for faster transmission of nerve impulses. The extracellular material in this case is limited to the small spaces between the fibers.
In summary, areolar tissue contains the largest quantity of extracellular material among the given options, as it serves to provide support and flexibility to various organs and tissues in the body.
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