MEDICAL PHYSIOLOGY

Detailed explanation-1: -Muscular arteries contain more smooth muscle cells in the tunica media layer than the elastic arteries. Elastic arteries are those nearest the heart (aorta and pulmonary arteries) that contain much more elastic tissue in the tunica media than muscular arteries.

Detailed explanation-2: -Muscular arteries are characterized by a relatively thick tunica media composed mostly of smooth muscle cells arranged in 3–40 layers (depending on the size of the artery). The tunica intima in the muscular arteries is thinner than that in the elastic arteries.

Detailed explanation-3: -The wall of an artery consists of three layers. The innermost layer, the tunica intima (also called tunica interna), is simple squamous epithelium surrounded by a connective tissue basement membrane with elastic fibers. The middle layer, the tunica media, is primarily smooth muscle and is usually the thickest layer.