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chapter 13 (13.1 Blood Vessles (capillaries (form extensive branching…
chapter 13
13.1 Blood Vessles
Arteries
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Some examples of elastic arteries (large arteries) are pulmonary trunk, and aorta and their major arterial branches
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Muscular arteries (medium arteries) distribute blood to skeletal muscles and internal organs. The thick tunica media contains more smooth than elastic.
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capillaries
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the only blood vessels whose walls permit exchange between the blood and the surrounding interstital fluid. (cells and the blood)
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entrance is guarded by precapillary sphincter, a band of smooth muscle.
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