Smooth Muscle is Present in the Walls Of

Question

Smooth muscle is present in the walls of
A) veins only.
B) arteries only.
C) muscular arteries only.
D) all vessel types except capillaries.
E) all vessel types.

Accepted Answer

Smooth muscle is present in the walls of all vessel types except capillaries, which are composed of endothelial cells only and lack smooth muscle.