A muscular artery refers to a type of medium-sized artery found in the human body. They are named so because of the prominent smooth muscle layer in their walls. Muscular arteries play a crucial role in regulating blood flow and distributing oxygenated blood to various tissues and organs. Examples of muscular arteries include the femoral artery, brachial artery, and renal artery. These arteries have a thicker tunica media layer compared to other types of arteries, allowing them to constrict and dilate to control blood flow based on the body's needs. The number of muscular arteries in the body is significant, as they are distributed throughout various regions and organs.

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