Question

Which statement is incorrect?
A)Mast cells and basophils secrete histamine and heparin.
B)Mast cells are long lived, basophils are short lived.
C)Mast cells are smaller than basophils with a bilobed nucleus.
D)Mast cells are relatively sessile, basophils are mobile.

Answer 1

A mast cell also termed to as a labrocyte could be a migrant cell of animal tissue that consists of several granules made in amino alkane and anticoagulant medication. Specifically, it is a sort of white corpuscle that are established from the myeloid vegetative cell that's a neighbourhood of the immune and neuroimmune systems. Mast cells were observed by bacteriologists in 1877.

Complete answer:
During mast cell degradation and destruction histamine is synthesised, which is an organic nitrogenous compound that plays a role in local immune responses, as well as regulating physiological function in the gut and acting as a neurotransmitter for the central nervous system (CNS). Histamine plays a role within the inflammatory response to foreign pathogens and features a central role as a mediator of itching.

Now let us find solution from given options:

Mast cells and basophils secrete histamine and heparin : This statement is exactly correct as both of them are granulocytes and they both help to prevent inflammatory reactions so they secretes histamine and heparin.

Mast cells are long lived, basophils are short lived : mast cells survive longer than that of basophils; they have 12 weeks of life span, but basophils live for 1-2 days.
Mast cells are smaller than basophils with a bilobed nucleus : Mast cells are larger than basophils and they possess round nuclei so this statement is not true.

Mast cells are relatively sessile, basophils are mobile : mast cells are fixed as they are a constituent of tissues but basophils help to show movement as they are white blood cells. So, this statement is exactly correct.

Hence, the correct answer is option (C)

Note: Mast cell, or also termed as tissue cell of the system of vertebrate animals. Mast cells provide inflammatory responses like hypersensitivity and allergies. they're scattered and present throughout the connective tissues of the body, particularly at a lower place the surface of the skin, close to blood vessels and bodily fluid vessels, among nerves, throughout the system respiratory, and within the biological process and urinary tracts.