The heart and blood vessels are lined by
A)pseudostratified columnar epithelium.
B)transitional epithelium.
C)simple cuboidal epithelium.
D)simple columnar epithelium.
E)simple squamous epithelium.

Question

Quizplus · Accepted Answer

The heart and blood vessels are lined by a thin layer of endothelial cells which form a simple squamous epithelium. This type of epithelium is well suited for the role of the endothelium in allowing for easy diffusion of gases and nutrients through the walls of the blood vessels.

The Heart and Blood Vessels Are Lined by