Platelet plugs are the only effective mechanism of hemostasis for breaks in:
A)capillaries
B)large arteries
C)large veins
D)medium-sized arteries

Question

Quizplus · Accepted Answer

Platelet plugs are the most effective mechanism of hemostasis for breaks in capillaries because capillaries are the smallest blood vessels and platelet plugs can more easily occlude the smaller vessel diameter. Platelet plugs are not effective in larger vessels such as arteries and veins because the force of blood flow and pressures in these vessels are much stronger and require secondary mechanisms of hemostasis such as clotting factors and fibrinogen.

Platelet Plugs Are the Only Effective Mechanism of Hemostasis for Breaks