This layer of a blood vessel wall is made of connective tissue and attaches the vessel to surrounding tissues.

Question

Quizplus · Accepted Answer

The tunica externa (also known as tunica adventitia) is the outermost layer of a blood vessel wall and is made of connective tissue. It attaches the vessel to the surrounding tissues. The other layers listed (epithelium, tunica interna, tunica media, and smooth muscle) are all layers within the blood vessel wall, but none of them specifically serve to attach the vessel to surrounding tissues.

This Layer of a Blood Vessel Wall Is Made of Connective