Answer
4. . C
Histamine increases capillary permeability in inflamed tissues.
Work Step by Step
Histamine is secreted by basophils and mast cells. Some of the actions of histamine include the following:
a. It increases the permeability of capillaries in inflammation
b. It acts as a neurotransmitter
c. It functions in allergic reactions.
d. It causes the itching sensation in allergic reactions