Muscular artery

Muscular artery

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Credit: CNRI/SCIENCE PHOTO LIBRARY

Caption: Muscular artery. Light micrograph of a transverse section through a muscular artery. This blood vessel has a thick, muscular wall that enables it to carry blood under pressure. This wall is composed of three layers. The innermost tunica intima surrounds the lumen (tube, white). It possesses a fine elastic sheet (dark purple, convoluted) known as the internal elastic lamina. The middle layer, the thick tunica media, is mainly composed of smooth muscle fibres (purple), interspersed with a few connective collagen fibres (blue). The external tunica adventitia (blue) is composed mainly of connective tissue. Trichrome blue stain. Magnification unknown.

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Keywords: adventitia, anatomy, arterial, artery, blood, circulation, circulatory, connective, fibre, fibres, healthy, histological, histology, human body, internal elastic lamina, layer, layers, light micrograph, media, muscle, muscular, normal, sectioned, smooth, stained, system, transverse section, trichrome blue stain, tunica intima, vascular, vessel, vessels, wall

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