A) histamine and dopamine
B) histamine and kinins
C) interferons and opsonin
D) interferons and histones
Correct Answer: B
Solution :
An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as histamine and kinins. Histamine: It is a chemical present in many cells of the body especially in mast cells in connective tissue, circulating basophils and blood platelets. Histamine is released in direct response to the injury of cells that contain it and by complement system. Kinins: Kinins are another group of substances that cause vasodilation and increase the permeability of blood vessels. Kinins are present in blood plasma.
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