artery

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1 BAC is recognized as medial calcific sclerosis of small to medium-sized muscular arteries of breast, and occurs more frequently in older women without association with breast cancer.
In addition large arteries are rich in elastin and collagen while on the other hand muscular arteries are rich in vascular smooth muscle3.
Polyarteritis nodosa (PAN) is a disorder characterized by necrotizing inflammation of the small- or medium-sized muscular arteries, commonly within the kidneys, gastrointestinal (GI) tract, skin, nerves, joints, and the muscles (1).
9) Polyarteritis nodosa is a systemic disease which affects the small- to medium-sized muscular arteries.
The MCA is a muscular artery and muscular arteries generally have the same basic composition as elastic arteries but the elastic tissue is reduced to a well-defined, fenestrated elastic sheet, the internal elastic lamina, in the tunica intima, and a diffuse external elastic lamina in the tunica adventitia.
The predominant vessels affected are the medium-sized muscular arteries.