Question

Which type of white blood cells releases histamine and heparin
(a)Monocytes
(b)Neutrophils
(c)Basophils
(d)Eosinophils

Answer 1

Hint: It's a sort of white blood corpuscle (leukocyte) that is portrayed histologically by its capacity to be recolored by fundamental colors and practically by its function in intervening excessive hypersensitivity responses of the immune system.

Complete answer:
Basophils of white blood cells are connected with the discharge of histamine and therefore the natural anticoagulant heparin. Particularly in people who cause allergic symptoms because basophils appear in many specific sorts of inflammatory reactions. Basophils contain anticoagulant heparin, which keeps blood from coagulating excessively fast. They additionally contain the vasodilator histamine, which elevates the bloodstream to tissues. They can be found in abnormally high numbers at locales of ectoparasite disease.

So, the answer is ‘filiform papillae- smallest and most numerous, found in the center of the tongue’.

Additional information: Basophils, alongside eosinophils and neutrophils, constitute a gaggle of white blood cells referred to as granulocytes.
The cells discharge their stores of inflammatory chemicals, including histamine, serotonin, and leukotrienes at the point when antibodies of the immunoglobulin E (IgE) class tie to particular receptor particles on basophils. These chemical substances have an assortment of impacts, including tightening of the agile muscles, which brings about breathing trouble; dilation of blood vessels, causing skin flush and hives; and an expansion in vascular penetrability, prompting expanding and a lessening in indispensable sign. Basophils additionally prompt quick hypersensitivity reactions in relationship with platelets, macrophages, and neutrophils.

Note:
Basophils are the least numerous of the granulocytes and account for less than 1 percent of all white blood cells occurring in the human body. Their huge granules stain purple-dark in shading and totally dark the basic twofold lobed core. Inside hours of their delivery from the bone marrow, basophils relocate from the flow to the barrier tissues.