Our vessels lose elasticity as we age, as happens in arteriosclerosis. Which vessel layer is affected?
A) tunica intima
B) tunica externa
C) tunica media
D) tunica adventitia

Question

Quizplus · Accepted Answer

The tunica media is the layer of the vessel that contains smooth muscle and elastic fibers, making it responsible for the vessel's elasticity. Arteriosclerosis is a condition in which the tunica media loses its elasticity, leading to hardening of the arteries. The tunica intima is the innermost layer of the vessel and is composed of endothelial cells. The tunica externa is the outermost layer of the vessel and is composed of connective tissue. The tunica adventitia is another name for the tunica externa.

Our Vessels Lose Elasticity as We Age, as Happens in Arteriosclerosis