The muscular layer of a blood vessel is the

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The muscular layer of a blood vessel is known as the tunica media. It is composed of smooth muscle cells that allow the vessel to constrict or dilate to regulate blood flow and pressure. The tunica intima is the innermost layer of a blood vessel, consisting of endothelial cells and a thin layer of connective tissue. The tunica externa (or tunica adventitia) is the outermost layer of a blood vessel, consisting of connective tissue that anchors the vessel to surrounding tissues. The tunica interna is not a recognized layer of a blood vessel.

The Muscular Layer of a Blood Vessel Is the