All blood vessels are lined with

Name: All blood vessels are lined with
Brand: Quizplus
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Question

Quizplus · Accepted Answer

All blood vessels are lined with endothelial cells, which form the innermost layer of the vessel wall. The tunica externa is the outermost layer and contains collagen and elastin fibers, while smooth muscle is found in the middle layer (the tunica media). Elastin is a protein found in the walls of some blood vessels but is not present in all vessels.

All Blood Vessels Are Lined with