Microvasculature that provides nourishment to the outer walls of the aorta is called the

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The vasa vasorum is a system of microvasculature that provides nourishment to the outer walls of the aorta, as well as other large blood vessels. The tunica intima is the innermost layer of the vessel wall, the subendothelial layer is a layer of connective tissue beneath the endothelium, the tunica media is the middle layer of the vessel wall containing smooth muscle cells, and the tunica externa is the outermost layer of the vessel wall consisting of connective tissue. None of these layers specifically provide nourishment to the aorta.

Microvasculature That Provides Nourishment to the Outer Walls of the Aorta