The chemical mediators that are released when mast cells degranulate primarily cause:
A) enhanced cardiac contractility.
B) vasodilation.
C) depressed pumping action of the heart.
D) vasoconstriction.

Question

Quizplus · Accepted Answer

Chemical mediators released when mast cells degranulate primarily cause vasodilation. Mast cells contain histamine, which causes dilation of blood vessels, leading to increased blood flow and increased permeability of capillaries. This allows for increased fluid and immune cells to leak out of the blood vessels and into the surrounding tissue, which is essential for the inflammatory response to occur.

The Chemical Mediators That Are Released When Mast Cells Degranulate