ANAT 1010 Chapter Notes - Chapter 14: Portal Venous System, Axillary Artery, Abdominal Wall
15 Apr 2017
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Document Summary
Blood vessels are tubes that carry blood away from the heart toward the tissues of the body and then return the blood to the heart o. Subtle modifications of basic design accounts for five different types of blood vessels, and the structural and functional differences among the various vessel types. Five main types of blood vessels: arteries carry blood away from the heart. Large and elastic that divide into medium-sized muscular arteries. Branch extensively, and divide into smaller arteries, which divide into smaller arteries called arterioles. Tunica media may be thicker or more elastic. Arteries normally have high compliance - their walls stretch easily or expand without tearing in response to a small increase in pressure: arterioles branch into capillaries o. Substances are exchanged between the blood and surrounding tissues through the wall of capillaries: venules merge to form veins, veins merge with each other to form progressively larger veins which carry the blood back to the heart.
