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All questions of Excretory Products and their Elimination for NEET Exam
Loops of Henle occurs in[CPMT 89]- a)Cortex
- b)Medulla
- c)Pelvis
- d)Ureter
Correct answer is option 'B'. Can you explain this answer?
Loops of Henle occurs in
[CPMT 89]
a)
Cortex
b)
Medulla
c)
Pelvis
d)
Ureter
|
Sarthak Rajendra Bande answered |
All parts of nephron other than loop of henle lie in the cortex of kidney but the loop of henle lie in medulla of kidney
Bowman's capsule is lined by- a)Ciliated cuboidal epithelium
- b)Squamous epithelium
- c)Nonciliated cuboidal epithelium
- d)Non ciliated columnar epithelium
Correct answer is option 'B'. Can you explain this answer?
Bowman's capsule is lined by
a)
Ciliated cuboidal epithelium
b)
Squamous epithelium
c)
Nonciliated cuboidal epithelium
d)
Non ciliated columnar epithelium
|
|
Sathvika Tadri answered |
Bowman's capsule is lined by 'simple squamous epithelium'..option B
Conditional reabsorption of sodium ions and water takes place in- a)DCT
- b)Collecting duct
- c)Henle’s loop
- d)PCT
Correct answer is option 'A'. Can you explain this answer?
Conditional reabsorption of sodium ions and water takes place in
a)
DCT
b)
Collecting duct
c)
Henle’s loop
d)
PCT
|
Ayush Chavan answered |
Conditional reabsorption of sodium ions and water takes place in distal convoluted tubule.
In mammals the urinary bladder opens into[DPMT 85]- a)Uterus
- b)Urethra
- c)Vestibule
- d)Ureter
Correct answer is option 'B'. Can you explain this answer?
In mammals the urinary bladder opens into
[DPMT 85]
a)
Uterus
b)
Urethra
c)
Vestibule
d)
Ureter
|
Addala Srilakshmi answered |
Ureter opens into urinary bladder and bladder opens into the urethra.
Part not belonging to uriniferous tubule is -
[AIPMT 94]
- a)Glomerulus
- b)Henle's loop
- c)Distal convoluted tuble
- d)Collecting duct
Correct answer is option 'A'. Can you explain this answer?
Part not belonging to uriniferous tubule is -
[AIPMT 94]
a)
Glomerulus
b)
Henle's loop
c)
Distal convoluted tuble
d)
Collecting duct
|
Ananya Das answered |
The uriniferous tubule or the kidney tubule is a fine, long, convoluted tubule that is involved in excretory functions. This tubule basically conveys urine from the glomerulus to the renal pelvis. A large amount of water and salts are reabsorbed during the passage of urine through it At certain locations in the kidney tubule, some ions are also secreted into the urine. It includes the Henle's loop, the DCT and PCT, and the collecting tubule.
So, the correct answer is 'Glomerulus'.
The retroperitoneal kidney is -a)Kidney of fishb)Kidney covered by Peritoneum on Dorsal sidec)Kidney covered by Peritoneum on ventral sided)Kidney uncovered by Peritoneum on ventral Side.Correct answer is option 'C'. Can you explain this answer?
|
Rohit Shah answered |
Visceral peritoneum. a continuation of the parietal peritoneum reflected at various places over the viscera, forming a complete covering for the stomach, spleen, liver, intestines from the distal duodenum to the upper end of the rectum, uterus, and ovaries; it also partially covers some other abdominal organs.
Which is false- a)Nephron-Excretion
- b)Alveoli-Respiration
- c)Kidney-osmoregulation
- d)Renin-Zymogen
Correct answer is option 'D'. Can you explain this answer?
Which is false
a)
Nephron-Excretion
b)
Alveoli-Respiration
c)
Kidney-osmoregulation
d)
Renin-Zymogen
|
Devika Chavan answered |
False statement: Renin-Zymogen
Explanation:
• Nephron-Excretion: Nephron is the functional unit of the kidney which removes waste products from the body in the form of urine. Hence, this statement is true.
• Alveoli-Respiration: Alveoli are the tiny air sacs present in the lungs where exchange of gases (oxygen and carbon dioxide) takes place during respiration. Hence, this statement is true.
• Kidney-osmoregulation: The kidneys regulate the water balance in the body by filtering excess water and salts from the blood and excreting them in the form of urine. Hence, this statement is true.
• Renin-Zymogen: Renin is an enzyme secreted by the kidneys that plays a role in regulating blood pressure by converting angiotensinogen (a plasma protein) into angiotensin I. It is not a zymogen (inactive precursor of an enzyme). Hence, this statement is false.
Therefore, the false statement is option D - Renin-Zymogen.
Explanation:
• Nephron-Excretion: Nephron is the functional unit of the kidney which removes waste products from the body in the form of urine. Hence, this statement is true.
• Alveoli-Respiration: Alveoli are the tiny air sacs present in the lungs where exchange of gases (oxygen and carbon dioxide) takes place during respiration. Hence, this statement is true.
• Kidney-osmoregulation: The kidneys regulate the water balance in the body by filtering excess water and salts from the blood and excreting them in the form of urine. Hence, this statement is true.
• Renin-Zymogen: Renin is an enzyme secreted by the kidneys that plays a role in regulating blood pressure by converting angiotensinogen (a plasma protein) into angiotensin I. It is not a zymogen (inactive precursor of an enzyme). Hence, this statement is false.
Therefore, the false statement is option D - Renin-Zymogen.
Nephron is also known as- a)Juxta glomerular tubule
- b)Seminiferous tubule
- c)Uriniferous tubule
- d)All
Correct answer is option 'C'. Can you explain this answer?
Nephron is also known as
a)
Juxta glomerular tubule
b)
Seminiferous tubule
c)
Uriniferous tubule
d)
All
|
Supriya Senapati answered |
The nephron plus the collecting tubule and collecting duct makes the uriniferous tubule (anatomofunctional unit of the kidney).The uriniferous tubule consists of the nephron and the collecting ducts.The nephron consists of the renal corpuscle(glomerulus and the Bowman’s capsule), proximal convoluted tubules, loop of henle(thick, thin and thick portions) and the distal convoluted tubule.so we can't say nephron is also known as Uriniferous tubules
In which part of nephron, reabsorption of glucose is maximum from filtrate?- a)Henle’s loop
- b)Distal convoluted tubule
- c)seminiferous tubules
- d)Proximal convoluted tubule
Correct answer is option 'D'. Can you explain this answer?
In which part of nephron, reabsorption of glucose is maximum from filtrate?
a)
Henle’s loop
b)
Distal convoluted tubule
c)
seminiferous tubules
d)
Proximal convoluted tubule
|
Shyamal Modak. answered |
The ans is D).PCT.
Acc. to NCERT nearly all the essential nutrients and 70-80% of the electrolytes and water are reabsorbed by this segment.i.e. PCT
Acc. to NCERT nearly all the essential nutrients and 70-80% of the electrolytes and water are reabsorbed by this segment.i.e. PCT
This artery passes blood to the kidney- a)common iliac
- b)cystic
- c)renal
- d)coeliac
Correct answer is option 'C'. Can you explain this answer?
This artery passes blood to the kidney
a)
common iliac
b)
cystic
c)
renal
d)
coeliac
|
Sushil Kumar answered |
renal artery: These arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood.
renal vein: The veins that drain the kidney and connect the kidney to the inferior vena cava.
Malpighian corpuscles occur in[CPMT 87]- a)Medulla
- b)Cortex
- c)Pelvis
- d)Pyramid
Correct answer is option 'B'. Can you explain this answer?
Malpighian corpuscles occur in
[CPMT 87]
a)
Medulla
b)
Cortex
c)
Pelvis
d)
Pyramid
|
|
Supriya Senapati answered |
Malpighian corpuscles are a number of small, round, deep-red bodies in the cortex of the kidney, each communicating with a renal tubule. Malpighian corpuscles average about 0.2 mm in diameter. Each capsule is composed of two parts: a central glomerulus and a glomerular capsule or Bowman's capsule. The corpuscles are part of a filtering system through which nonprotein components of blood plasma enter the tubules for urinary excretion.
Haemodialysis is associated with- a)Kidney
- b)Spleen
- c)Stomach
- d)Liver
Correct answer is option 'A'. Can you explain this answer?
Haemodialysis is associated with
a)
Kidney
b)
Spleen
c)
Stomach
d)
Liver
|
|
Raghav Bansal answered |
Haemodialysis is associated with the kidneys. This type of dialysis achieves the extracorporeal removal of waste products such as creatinine and urea and free water from the blood when the kidneys are in a state of kidney failure. Hemodialysis is one of three renal replacement therapies (the other two being kidney transplant and peritoneal dialysis).
The filtration fraction is the ratio of GFR to RPF where both the values are in ml/min and FF is expressed in percentage. Calculate FF for a normal adult human being, if RPF= 600ml/min :- a)2.08%
- b)20.73%
- c)10.38%
- d)20.83%
Correct answer is option 'D'. Can you explain this answer?
The filtration fraction is the ratio of GFR to RPF where both the values are in ml/min and FF is expressed in percentage. Calculate FF for a normal adult human being, if RPF= 600ml/min :
a)
2.08%
b)
20.73%
c)
10.38%
d)
20.83%
|
Janhavi Rane answered |
FF = (125/600)*100 = 20.83%
The following substances are the excretory products in animals. Choose the least toxic form among them?- a)Urea
- b)Uric acid
- c) Ammonia
- d)Carbon dioxide
Correct answer is option 'B'. Can you explain this answer?
The following substances are the excretory products in animals. Choose the least toxic form among them?
a)
Urea
b)
Uric acid
c)
Ammonia
d)
Carbon dioxide
|
Anshu Saha answered |
The least toxic form among the excretory products in animals is uric acid.
Explanation:
• Animals excrete waste products that are formed during metabolic processes.
• The excretory products are mainly classified into three types: ammonia, urea, and uric acid.
• Ammonia is highly toxic and water-soluble. It is excreted by aquatic animals, but not by terrestrial animals because of its toxicity.
• Urea is less toxic than ammonia and water-soluble. It is excreted by most terrestrial animals, including humans.
• Uric acid is the least toxic form among the three. It is insoluble in water and is excreted in the form of a paste or a solid.
• Uric acid is the excretory product of birds, reptiles, and insects. It is also excreted by some other animals, such as snails and spiders.
• Uric acid is less toxic than ammonia and urea because it requires less water for its excretion.
• The excretion of uric acid conserves water, which is essential for survival in arid environments.
• In humans, excess uric acid can lead to gout, a painful condition caused by the deposition of uric acid crystals in the joints.
Therefore, uric acid is the least toxic form among the excretory products in animals.
Explanation:
• Animals excrete waste products that are formed during metabolic processes.
• The excretory products are mainly classified into three types: ammonia, urea, and uric acid.
• Ammonia is highly toxic and water-soluble. It is excreted by aquatic animals, but not by terrestrial animals because of its toxicity.
• Urea is less toxic than ammonia and water-soluble. It is excreted by most terrestrial animals, including humans.
• Uric acid is the least toxic form among the three. It is insoluble in water and is excreted in the form of a paste or a solid.
• Uric acid is the excretory product of birds, reptiles, and insects. It is also excreted by some other animals, such as snails and spiders.
• Uric acid is less toxic than ammonia and urea because it requires less water for its excretion.
• The excretion of uric acid conserves water, which is essential for survival in arid environments.
• In humans, excess uric acid can lead to gout, a painful condition caused by the deposition of uric acid crystals in the joints.
Therefore, uric acid is the least toxic form among the excretory products in animals.
Excretory material are formed in- a)Kidney
- b)Rectum
- c)Liver
- d)Every body cell
Correct answer is option 'D'. Can you explain this answer?
Excretory material are formed in
a)
Kidney
b)
Rectum
c)
Liver
d)
Every body cell
|
Hansa Sharma answered |
Excretory formed in every body cell. blood takes the all excretory material & it is purified through the kidney every body cell has the unwanted materials which is not required by the cell.
Sulphates phosphates and carbonates of calcium are excreted by- a)Kidney
- b)Liver
- c)Spleen
- d)Colon
Correct answer is option 'D'. Can you explain this answer?
Sulphates phosphates and carbonates of calcium are excreted by
a)
Kidney
b)
Liver
c)
Spleen
d)
Colon
|
|
Riya Banerjee answered |
Most kidney stones are calcium stones, usually in the form of calcium oxalate, phosphate, or maleate. Urinary sulfate is a reflection of dietary protein intake, particularly meat, fish, and poultry, which are rich in sulfur-containing amino acids methionine and cysteine. Urinary sulfate can be used to assess dietary protein intake for nutritional purposes. A protein-rich diet has been associated with an increased risk for stone formation. Some patients form stones that are composed of a mixture of magnesium, ammonium, phosphate, and calcium carbonate, which is known as struvite. These stones form as a result of infection with certain types of bacteria that can produce ammonia.CORRECT OPTION IS (D).
A renal corpuscle is :- a)malpighian body
- b)malpighian tubule
- c)nephron
- d)Bowman’s capsule
Correct answer is option 'A'. Can you explain this answer?
A renal corpuscle is :
a)
malpighian body
b)
malpighian tubule
c)
nephron
d)
Bowman’s capsule
|
Ayush Choudhury answered |
Renal corpuscle, also called malpighian body, filtration unit of vertebrate nephrons, functional units of the kidney. It consists of a knot of capillaries (glomerulus) surrounded by a double-walled capsule (Bowman's capsule) that opens into a tubule.
Excretory product of mammals is[CPMT82]- a)Salts
- b)Glucose
- c)Urea
- d)Ammonia
Correct answer is option 'C'. Can you explain this answer?
Excretory product of mammals is
[CPMT82]
a)
Salts
b)
Glucose
c)
Urea
d)
Ammonia
|
Dilip answered |
Mammals is ureolatic so urea is produced.
Bile pigments are formed in- a)Liver
- b)Spleen
- c)Every body cells
- d)1 & 2 both
Correct answer is option 'D'. Can you explain this answer?
Bile pigments are formed in
a)
Liver
b)
Spleen
c)
Every body cells
d)
1 & 2 both
|
Om Desai answered |
That liver forms bile pigment but the question arises when spleen gets involved. spleen is considered as the graveyard of RBC, so when the damaged, ruptured RBC get stuck in spleen they break down into simpler substances and one of the break down products are bile pigments
During urine formation, the tubular cells secrete ------------------ into the filtrate.- a)Potassium ions and ammonia
- b)Hydrogen ions and potassium ions
- c)Hydrogen ions, potassium ions and ammonia
- d)Only ammonia
Correct answer is option 'C'. Can you explain this answer?
During urine formation, the tubular cells secrete ------------------ into the filtrate.
a)
Potassium ions and ammonia
b)
Hydrogen ions and potassium ions
c)
Hydrogen ions, potassium ions and ammonia
d)
Only ammonia
|
Kunal Rane answered |
During urine formation, the tubular cells secrete substances like hydrogen ions, potassium ions and ammonia into the filtrate.
Which blood vessel takes blood away from the kidney? - a)Renal portal vein
- b)Renal vein
- c)Afferent arteriole
- d)Efferent arteriole
Correct answer is option 'B'. Can you explain this answer?
Which blood vessel takes blood away from the kidney?
a)
Renal portal vein
b)
Renal vein
c)
Afferent arteriole
d)
Efferent arteriole
|
Ramesh Chand answered |
The renal vein takes blood away from the kidney. The process starts with renal artery which enters the kidney as afferent arteriole. It carries the urea loaded blood into the glomerulus of the kidney. The blood is filtered by the glomerulus into the Bowman's capsule and runs parallel to the loop of Henle. The urea is absorbed into the nephric filtrate by the process of tubular secretion in the loop of Henle, distal convulated tubule and collecting duct. The process of tubular secretion helps to secrete the urea from the blood to the collecting duct which is finally excreted in form of urine. The purified blood comes from the kidney through the renal vein and drained into vena cava outside kidney.
So, the correct answer is 'Renal vein'.
So, the correct answer is 'Renal vein'.
Renal papilla is the part of :–- a)Minor calyx
- b)Pelvis
- c)Pyramid
- d)Major calyx
Correct answer is option 'C'. Can you explain this answer?
Renal papilla is the part of :–
a)
Minor calyx
b)
Pelvis
c)
Pyramid
d)
Major calyx
|
|
Rohit Shah answered |
Kidney, with renal papilla labeled at upper right. The renal papilla is the location where the renal pyramids in the medulla empty urine into the minor calyx in the kidney. Histologically it is marked by medullary collecting ducts converging to form a papillary duct to channel the fluid.
Nephron is made up of- a)Malpighian body
- b)Coiled tuble
- c)Both
- d)None
Correct answer is option 'C'. Can you explain this answer?
Nephron is made up of
a)
Malpighian body
b)
Coiled tuble
c)
Both
d)
None
|
|
Jyoti Kapoor answered |
It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and an encompassing Bowman's capsule.The capsule and tubule are connected and are composed of epithelial cells with a lumen. A healthy adult has 0.8 to 1.5 million nephrons in each kidney.
SO OPTION C IS CORRECT.
Which of the following is the part of kidney ?- a)Cortex
- b)Medulla
- c)Pelvis
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
Which of the following is the part of kidney ?
a)
Cortex
b)
Medulla
c)
Pelvis
d)
All of the above
|
|
Santunu Pradhan answered |
Renal cortex, renal medulla and pelvis all are the parts of kideny. so ans. is all of the above.
pH of urine under healthy conditions is :- a)slightly alkaline
- b)neutral
- c)highly alkaline
- d)slightly acidic
Correct answer is option 'D'. Can you explain this answer?
pH of urine under healthy conditions is :
a)
slightly alkaline
b)
neutral
c)
highly alkaline
d)
slightly acidic
|
Soumya Ahuja answered |
The pH of urine under healthy conditions is slightly less than 7 so, slightly acidic in nature.
Reabsorption of useful substances from the glomerular filtrate occurs in- a)Loop of Henle
- b)Proximal convoluted tubule
- c)Distal convoluted tubule
- d)Collecting duct
Correct answer is option 'B'. Can you explain this answer?
Reabsorption of useful substances from the glomerular filtrate occurs in
a)
Loop of Henle
b)
Proximal convoluted tubule
c)
Distal convoluted tubule
d)
Collecting duct
|
Pallabi Reddy answered |
The cells lining the proximal convoluted tubule are well adapted for reabsorption of materials from the filtrate. They have abundant mitochondria and bear numerous microvilli on the free side. Mitochondria power the active transport of nutrient molecules back into the blood. The cells reabsorb entire glucose, amino acids, most of the inorganic ions (Na
+
, K
+
, Cl~), much of the water as well as some urea from the filtrate.
ADH acts on the- a)Collecting tubule of kidney
- b)Loop of Henle
- c)Collecting ducts of testes
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
ADH acts on the
a)
Collecting tubule of kidney
b)
Loop of Henle
c)
Collecting ducts of testes
d)
None of the above
|
|
Rajeev Saxena answered |
In the kidneys the receptors for ADH are found on the nephrons; the microscopic functional units of the kidneys. The parts of the nephron where the receptors are specifically located are on the distal convoluted tubule and collecting duct .
Workers in deep mines usually suffer from dehydration because[AFMC 83]- a)Water is lost due to evaporation
- b)Water is lost due to defeacation
- c)Water is lost in the form of urines
- d)Water is lost along with salts in the form of sweat
Correct answer is option 'D'. Can you explain this answer?
Workers in deep mines usually suffer from dehydration because
[AFMC 83]
a)
Water is lost due to evaporation
b)
Water is lost due to defeacation
c)
Water is lost in the form of urines
d)
Water is lost along with salts in the form of sweat
|
Sahiba Hoor answered |
When we do any hard physical activity then body losses more salts in the form of sweat and for that excretion of salts water is required. so workers loss more than normal quantity of water therefore they suffer from dehydration...
Henle's loop is located in- a)cortex
- b)Medulla
- c)Pelvis
- d)Renal colums
Correct answer is option 'B'. Can you explain this answer?
Henle's loop is located in
a)
cortex
b)
Medulla
c)
Pelvis
d)
Renal colums
|
Hidayath Shaik answered |
Loop of Henle. The Loop of Henle (LoH) is a long, straight, tubular segment connecting the proximal tubule to the distal convoluted tubule and lies parallel to the collecting ducts. The LoH descends from the cortex or medulla (depending on the size/length of the nephron) into the papilla of the kidney.
A notch present on the medial side of kidney is known as- a)Ureter
- b)Pelvis
- c)Hilus
- d)Pyramid
Correct answer is option 'C'. Can you explain this answer?
A notch present on the medial side of kidney is known as
a)
Ureter
b)
Pelvis
c)
Hilus
d)
Pyramid
|
Gaurav Kumar answered |
This fissure is a hilum that transmits the vessels, nerves, and ureter. From anterior to posterior, the renal vein exits, the renal artery enters, and the renal pelvis exits the kidney.
Blood enters glomerular capillaries through _____ arteriole and leaves through _____ arteriole:- a)efferent, afferent
- b)radial, collecting
- c)distributing, collecting
- d)afferent, efferent
Correct answer is option 'D'. Can you explain this answer?
Blood enters glomerular capillaries through _____ arteriole and leaves through _____ arteriole:
a)
efferent, afferent
b)
radial, collecting
c)
distributing, collecting
d)
afferent, efferent
|
|
Rohan Singh answered |
Our nervous system has different types of neurons that are constantly at work. Neurons that receive information from our sensory organs (e.g. eye, skin) and transmit this input to the central nervous system are called afferent neurons. Neurons that send impulses from the central nervous system to your limbs and organs are called efferent neurons.
Therefore, as the afferent neurons convey the sensory stimulus to the brain (like burning sensation of a candle), the efferent neurons convey the motor stimulus to the muscles (moving the hand away from the candle). To sum it up: Afferent = Receive and Efferent = Act.
The tracts that are conveying sensations up to the brain are also referred to as the ascending tracts. Going in the opposite direction than the ascending tracts, the tracts linking the brain to all the muscles and organs of the body are called descending tracts.
Which types of fibers are damaged after a spinal cord injury determine the individual failures. If motor (= efferent) fibers are destroyed, you are not able to lift your leg, because the command can’t be transmitted from the brain to the muscles in the leg. If sensory (= afferent) fibers are affected, you and your brain won’t be notified by the sensory organs, e.g. if somebody strikes your leg. In fact, mostly a combination of efferent and afferent fibers is damaged after a spinal cord injury.
The hormone with enzymatic action which catalyses conversion of angiotensinogen into angiotensin is :- a)ANF
- b)Renin
- c)JFA
- d)Aldosterone
Correct answer is option 'B'. Can you explain this answer?
The hormone with enzymatic action which catalyses conversion of angiotensinogen into angiotensin is :
a)
ANF
b)
Renin
c)
JFA
d)
Aldosterone
|
|
Sapna Patel answered |
Angiotensin is produced by the action of renin (an enzyme produced by the kidneys) on a protein called angiotensinogen, which is formed by the liver.
Which of the following is not a part of glomerular filtrate?- a)globulins
- b)inorganic salts
- c)glucose
- d)creatinine
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not a part of glomerular filtrate?
a)
globulins
b)
inorganic salts
c)
glucose
d)
creatinine
|
Maheshwar Saini answered |
Glomerular filtrate contains glucose, inorganic salts and creatinine but it do not contain globulins protein.
Read the following :
i. Infants and toddlers are often under habit of bed wetting since micturition is a reflex process.
ii. Adults and grown up children can control this reflex process, voluntarily to some extent.- a)both are correct
- b)Statement i) is correct and ii) is wrong
- c)both are wrong
- d)Statement i) is wrong and ii) is correct
Correct answer is option 'A'. Can you explain this answer?
Read the following :
i. Infants and toddlers are often under habit of bed wetting since micturition is a reflex process.
ii. Adults and grown up children can control this reflex process, voluntarily to some extent.
i. Infants and toddlers are often under habit of bed wetting since micturition is a reflex process.
ii. Adults and grown up children can control this reflex process, voluntarily to some extent.
a)
both are correct
b)
Statement i) is correct and ii) is wrong
c)
both are wrong
d)
Statement i) is wrong and ii) is correct
|
Shivani Tiwari answered |
The process of release of urine is called micturition and the neural mechanism causing it is called the micturition reflex. Adults and grown up children can control the reflex process of micturition voluntarily to some extent.
Excretion is[CPMT 80]- a)Removal of substances not required by body
- b)Removal of useless substances and susbtances present in excess
- c)Formation of substances having some role in body
- d)All the above
Correct answer is option 'B'. Can you explain this answer?
Excretion is
[CPMT 80]
a)
Removal of substances not required by body
b)
Removal of useless substances and susbtances present in excess
c)
Formation of substances having some role in body
d)
All the above
|
|
Suresh Reddy answered |
Excretion is the process by which the body gets rid of waste products and the nitrogenous by-products of metabolism. Through excretion, organisms control osmotic pressure, the balance between inorganic ions and water, and maintain acid-base balance. The process thus promotes homeostasis.
Excretion is the disposal of overabundance particles, water, and metabolic squander from the body. As in all life forms, excretion in creepy crawlies serves to advance the suitable guideline (homeostasis) of the intracellular condition as the way to organismal prosperity and endurance.
Hence, the right answer is option b "removal of useless substances present in excess."
Select the option that correctly identifies the parts lateral from A to F in the given figure of nephron.
- a)a
- b)b
- c)c
- d)d
Correct answer is option 'C'. Can you explain this answer?
Select the option that correctly identifies the parts lateral from A to F in the given figure of nephron.
a)
a
b)
b
c)
c
d)
d
|
Pinky Kumari answered |
Nephron functional unit of kidney the structure that actually produces urin in the process of removing waste and excess substance from the blood.there are about 1000,000 nephron in each human kidney. nephron is the minet or microscope the renal cropuscle consists of a tuft of capillaries called a glomerulus and a cup- shaped structure called bowmens there types of nephron can be distinguished superficial ,midcortical and juxtamedullary nephron. A healthy adults has 1 to 1.5 million nephron per kidney. sir William bowmen first baronet discovered nephron .
Diameter of the renal afferent arterioles is
a) Same as that of efferent
b) Smaller than that of efferent
c) Larger than that of efferent
d) There is no efferent vessel
Correct answer is option 'C'. Can you explain this answer?
|
|
Anuradha Thakare answered |
Afferent arterioles has more diameter than efferent. and that's why there is generation of filtration pressure.
All of the following organs help in excretion except :- a)Liver
- b)Lungs
- c)Heart
- d)Skin
Correct answer is option 'C'. Can you explain this answer?
All of the following organs help in excretion except :
a)
Liver
b)
Lungs
c)
Heart
d)
Skin
|
|
Sapna Patel answered |
The function of heart is different from the rest options in a way that heart is an organ that pumps blood throughout
the body tissues and removing carbon dioxide and other wastes. And hence does not helps in excretion.
Excretory products of mammalian embryo are eliminated by-[CPMT-81, APMS 85]- a)Placenta
- b)Amniotic fluid
- c)Allantois
- d)Ureters
Correct answer is option 'A'. Can you explain this answer?
Excretory products of mammalian embryo are eliminated by-
[CPMT-81, APMS 85]
a)
Placenta
b)
Amniotic fluid
c)
Allantois
d)
Ureters
|
|
Gaurav Kumar answered |
Through umbilical cord and placenta excretory products of embryo reach mothers blood. Then as usual, mothers blood is filtered in kidneys.
Which blood vessel contains the least amount of urea[CPMT 84]- a)Hepatic vein
- b)Renal vein
- c)Hepatic portal vein
- d)Renal artery
Correct answer is option 'B'. Can you explain this answer?
Which blood vessel contains the least amount of urea
[CPMT 84]
a)
Hepatic vein
b)
Renal vein
c)
Hepatic portal vein
d)
Renal artery
|
Meera Singh answered |
Hepatic vein is the vein which carries the blood from the liver.
Hepatic portal vein supplies blood from liver to intestine.
Dorsal aorta is the renal artery which supplies blood to the kidney.
The blood in the renal vein will contain less urea than the renal artery, because having passed through the kidney, urea leaves the blood through pressure filtration at the glomerulus with only a small amount being passively reabsorbed at the proximal convoluted tubule.
Thus, the correct answer is option B
Hepatic portal vein supplies blood from liver to intestine.
Dorsal aorta is the renal artery which supplies blood to the kidney.
The blood in the renal vein will contain less urea than the renal artery, because having passed through the kidney, urea leaves the blood through pressure filtration at the glomerulus with only a small amount being passively reabsorbed at the proximal convoluted tubule.
Thus, the correct answer is option B
During micturition, the muscles of urinary bladder and urethral sphincters will- a)contract and relax respectively.
- b)none of these
- c)show fatigue
- d)relaxand contract respectively.
Correct answer is option 'A'. Can you explain this answer?
During micturition, the muscles of urinary bladder and urethral sphincters will
a)
contract and relax respectively.
b)
none of these
c)
show fatigue
d)
relaxand contract respectively.
|
Jyoti Desai answered |
Micturition is the process of voiding urine from the body. During this process, the muscles of the urinary bladder and urethral sphincters play a crucial role in controlling the flow of urine. The correct answer to the given question is option 'A', i.e., the muscles of the urinary bladder will contract, and the urethral sphincters will relax.
Explanation:
The process of micturition involves the following steps:
1. Filling of the urinary bladder: The urinary bladder is a muscular sac that stores urine until it is eliminated from the body. As the bladder fills with urine, its walls stretch, and the pressure inside the bladder increases.
2. Sensory input to the spinal cord: The stretch receptors in the bladder walls send signals to the spinal cord, indicating that the bladder is full.
3. Activation of the micturition reflex: The spinal cord processes the sensory input and generates a reflex response that activates the muscles of the bladder and urethral sphincters.
4. Contraction of the bladder muscles: The muscles of the bladder wall contract, forcing urine out of the bladder and into the urethra.
5. Relaxation of the urethral sphincters: The urethral sphincters, which are circular muscles that control the flow of urine through the urethra, relax, allowing urine to pass out of the body.
Therefore, during micturition, the muscles of the urinary bladder will contract, and the urethral sphincters will relax to allow the flow of urine out of the body.
Explanation:
The process of micturition involves the following steps:
1. Filling of the urinary bladder: The urinary bladder is a muscular sac that stores urine until it is eliminated from the body. As the bladder fills with urine, its walls stretch, and the pressure inside the bladder increases.
2. Sensory input to the spinal cord: The stretch receptors in the bladder walls send signals to the spinal cord, indicating that the bladder is full.
3. Activation of the micturition reflex: The spinal cord processes the sensory input and generates a reflex response that activates the muscles of the bladder and urethral sphincters.
4. Contraction of the bladder muscles: The muscles of the bladder wall contract, forcing urine out of the bladder and into the urethra.
5. Relaxation of the urethral sphincters: The urethral sphincters, which are circular muscles that control the flow of urine through the urethra, relax, allowing urine to pass out of the body.
Therefore, during micturition, the muscles of the urinary bladder will contract, and the urethral sphincters will relax to allow the flow of urine out of the body.
Inner wall of urinary bladder is composed of- a)Unstriped muscles
- b)Striped muscles
- c)Stratified epithelium
- d)Transitional epithilium
Correct answer is option 'D'. Can you explain this answer?
Inner wall of urinary bladder is composed of
a)
Unstriped muscles
b)
Striped muscles
c)
Stratified epithelium
d)
Transitional epithilium
|
|
Rajeev Saxena answered |
The inner lining of the urinary bladder is a mucous membrane of transitional epithelium that is continuous with that in the ureters. ... The second layer in the walls is the submucosa, which supports the mucous membrane. It is composed of connective tissue with elastic fibers.
Dialysing unit (artificial kidney) contains a fluid which is almost the same as plasma except that it has- a)High uric acid
- b)High glucose
- c)High urea
- d)No urea
Correct answer is option 'D'. Can you explain this answer?
Dialysing unit (artificial kidney) contains a fluid which is almost the same as plasma except that it has
a)
High uric acid
b)
High glucose
c)
High urea
d)
No urea
|
Infinity Academy answered |
Artificial kidney (Dialysing unit ) is a machine that is used for filtration of blood in the people whose kidneys are failed or damaged by the process called Dialysis.
Dialysis fluid is produced by the blending of treated water with electrolytes at the patient's bedside. The composition of the dialysis fluid should match that of plasma except for the nitrogenous waste (urea).
So the answer is 'No urea'.
In human minor calyx number is :–- a)Uncountable
- b)8 to 14
- c)Equal to pyramid number
- d)Depends on major calyx number.
Correct answer is option 'C'. Can you explain this answer?
In human minor calyx number is :–
a)
Uncountable
b)
8 to 14
c)
Equal to pyramid number
d)
Depends on major calyx number.
|
|
Jyoti Kapoor answered |
The minor calyces surround the apex of the renal pyramids. Urine formed in the kidney passes through a renal papilla at the apex into the minor calyx; two or three minor calyces converge to form a major calyx, through which urine passes before continuing through the renal pelvis into the ureter.
Nitrogenous waste products are eliminated mainly as -[AIPMT 91]- a)Urea in tadpole & ammonia in adult frog
- b)Ammonia in tadpole and urea in adult frog
- c)Urea in both tadpole & adult frog.
- d)Urea in tadpole and uric acid in adult frog.
Correct answer is option 'B'. Can you explain this answer?
Nitrogenous waste products are eliminated mainly as -
[AIPMT 91]
a)
Urea in tadpole & ammonia in adult frog
b)
Ammonia in tadpole and urea in adult frog
c)
Urea in both tadpole & adult frog.
d)
Urea in tadpole and uric acid in adult frog.
|
Pooja Shah answered |
Animals that excrete excess nitrogen in the form of ammonia are called ammonotelic. Excretion of ammonia occurs in aquatic animals (aquatic invertebrates, fishes, larvae, permanently aquatic amphibia). The route of ammonia diffusion in these animals is through skin, gills or kidneys. In mammals and semi terrestrial adult amphibians, urea is a major nitrogenous excretory product, therefore these animals are called ureotelic.
Read the given statements and select the correct option.
Statement 1 : When the urine moves through the descending limb, it becomes hypertonic to blood plasma and as it passes through are ascending limb, of Henle's loop it becomes hypotonic to blood plasma.
Statement 2 : The descending limb is permeable to sodium ions, while the ascending limb is impermeable to sodium ions.
- a)Statement 1 is correct and statement 2 is incorrect.
- b)Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
- c)Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
- d)Both statements 1 and 2 are incorrect.
Correct answer is option 'A'. Can you explain this answer?
Read the given statements and select the correct option.
Statement 1 : When the urine moves through the descending limb, it becomes hypertonic to blood plasma and as it passes through are ascending limb, of Henle's loop it becomes hypotonic to blood plasma.
Statement 2 : The descending limb is permeable to sodium ions, while the ascending limb is impermeable to sodium ions.
Statement 1 : When the urine moves through the descending limb, it becomes hypertonic to blood plasma and as it passes through are ascending limb, of Henle's loop it becomes hypotonic to blood plasma.
Statement 2 : The descending limb is permeable to sodium ions, while the ascending limb is impermeable to sodium ions.
a)
Statement 1 is correct and statement 2 is incorrect.
b)
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
c)
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
d)
Both statements 1 and 2 are incorrect.
|
|
Anjali Sharma answered |
As the urine passes through the descending limb it becomes hypertonic, as descending limb is more permeable to water and less permeable to sodium ions.
The filtrate becomes hypotonic as ascending limb is less permeable to water and more permeable to sodium ions.
The statement 1 is correct but the statement 2 is incorrect.
The filtrate becomes hypotonic as ascending limb is less permeable to water and more permeable to sodium ions.
The statement 1 is correct but the statement 2 is incorrect.
Where are the kidneys situated?- a)Between the 7th and 10th ribs
- b)Between the 8th and 9th ribs
- c)Between the last thoracic and third lumbar vertebra
- d)Between the first and second thoracic vertebra
Correct answer is option 'C'. Can you explain this answer?
Where are the kidneys situated?
a)
Between the 7th and 10th ribs
b)
Between the 8th and 9th ribs
c)
Between the last thoracic and third lumbar vertebra
d)
Between the first and second thoracic vertebra
|
Nipuns Institute answered |
Kidneys are reddish-brown, bean-shaped structures situated between the levels of the last thoracic and third lumbar vertebra close to the dorsal inner wall of the abdominal cavity.
Chapter doubts & questions for Excretory Products and their Elimination - 1 Year Dropper Course for NEET 2025 is part of NEET exam preparation. The chapters have been prepared according to the NEET exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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