Mineral found in red pigment of vertebrate blood is
Red pigment of vertebrate blood is haemoglobin. Haemoglobin is a conjugated protein. It consists of a basic protein globin joined to a nonprotein group heme, hence the name haemoglobin. Heme is an iron-porphyrin ring. A mammalian haemoglobin molecule is a complex of 4 heme molecules joined with 4 globin molecules.
The process by which bone formed is known as:
The contractile protein of skeletal muscle involving ATPase activity is
The kinesin, myosin and dynein proteins of skeletal muscle involve ATPase activity. This cause the contraction of skeletal muscles, propelling action of cillia and flagella and the intracellular transport of organelles.
Which of the following acts as antibody to help in body defence?
Immunoglobulin A (IgA), as the principal antibody class in the secretions that bathe these mucosal surfaces, acts as an important first line of defence. IgA, also an important serum immunoglobulin, mediates a variety of protective functions through interaction with specific receptors and immune mediators. The importance of such protection is underlined by the fact that certain pathogens have evolved mechanisms to compromise IgA-mediated defence, providing an opportunity for more effective invasion. IgA function may also be perturbed in certain disease states, some of which are characterized by deposition of IgA in specific tissues. This review details current understanding of the roles played by IgA in both health and disease.
Smooth muscle is found in all the sites except:
The medial rectus is an extraocular muscle that attaches to the side of the eye near the nose. It moves the eye inward toward the nose. The lateral rectus is an extraocular muscle that attaches to the side of the eye near the temple. It moves the eye outward.
In a neuron, dendrite may be one or many, but axon is generally:
A tissue is made up of:
Tissues can be categorized based on the cell types that are present. If a tissue contains only one cell type it is called a simple tissue. If a tissue contains more than one cell type it is a complex tissue.
(i) Simple Tissues (made up of one cell type).
(ii) Complex Tissue (made up of more than one cell type)
Which one of the following cellular components of the blood is responsible for the production of antibodies?
Which of the following is present in the alveoli of lungs?
The respiratory or gas - exchange surface consists of millions of small sacs, or alveoli, lined by a simple squamous epithelium. This epithelium is exceedingly thin to facilitate diffusion of oxygen and CO2. The alveolar walls also contain cuboidal surfactant - secreting cells.
This one is the characteristic of epithelial tissue:
Blood plasma is:
The pH of the extracellular fluid, including the blood plasma, is normally tightly regulated between 7.32 and 7.42 , by the chemical buffers, the respiratory system, and the renal system.
So, the correct answer is Alkaline.
Which of the following is a transparent tissue?
B is the correct option.Hyaline cartilage is a type of connective tissue found in areas such as the nose, ears, and trachea of the human body. The word hyaline means “glass-like”, and hyaline cartilage is a glossy, greyish-white tissue with a uniform appearance.
Lacuna of bone contains:
Major protein of connective tissue is:
Light bands of muscle fibre are made of the protein:
Lysosome is a cytoplasmic organelle containingenzymesthat break down biological polymers. Lysosomes function as the digestive system of the cell. It is also called the suicide bag of the cell because:
Lysosomes are the single membrane-bounded organelle found in eukaryotic cells. It contains hydrolytic enzymes for the digestion of the cell debris, wastes, foreign particles, dead or nonfunctional organelles. Lysosomes are called as suicide bags because of its hydrolytic activities. It digests their own cell when the plasma membrane gets rupture and the pH of the cell get change.
Processes from osteoblasts are found in :
B is the correct option.Osteocytes derive from osteoblasts, or bone-forming cells, and are essentially osteoblasts surrounded by the products they secreted. Cytoplasmic processes of the osteocyte extend away from the cell toward other osteocytes in small channels called canaliculi.
The bone marrow is composed of :
The longitudinal canals of the bone are called :
Volkmann's canals occur in :-
The correct answer is B as Volkmann's canals are small channels in bone that transmit blood vessels from the periosteum into the bone and that lie perpendicular to and communicate with the Haversian canals. It is named after Volkmann Alfred Wilhelm. It is only found in bones of mammals. Hence, option C is correct.