The layer(s) of an artery wall that is/are responsible for vasoconstriction and vasodilation is/are the
A) tunica externa
B) tunica interna (intima)
C) tunica media
D) All of the choices are correct.

Question

Quizplus · Accepted Answer

The tunica media, composed primarily of smooth muscle cells and elastic fibers, is responsible for vasoconstriction and vasodilation, allowing arteries to regulate blood pressure and flow.

The Layer(s) of an Artery Wall That Is/are Responsible for Vasoconstriction