As a Platelet Plug Forms,platelets Release the Vasoconstricting Substance Called

Question

As a platelet plug forms,platelets release the vasoconstricting substance called
A) collagen.
B) creatine.
C) serotonin.
D) fibrin.
E) acetylcholine.

Accepted Answer

Platelets release serotonin, which causes vasoconstriction and helps to decrease blood flow to the injured area. This helps to minimize the loss of blood and allows time for the coagulation cascade to start.