BIO 142 EXAM 1 Ch. 18 Study Guide
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5 Terms
Define arteries and veins.
Arteries: distribution system of vasculature. Veins: collection system of vasculature
Name the arteries from largest to smallest.
Elastic, Muscular, Arterioles, Venules, Veins
Explain the vessels which make the blood reservoir.
Veins, they can be diverted from veins to other parts of system
Name the three types of capillaries and mention their characteristics.
Continuous capillaries: tight junctions, least leaky. Fenestrated capillaries: moderately leaky, contain fenestrations in the cells. Sinusoidal capillaries: very large pores, leakiest.
Name the three coats of blood vessels in order and briefly mention the structure of each.
Tunica intima: innermost, contains endothelium and elastic lamina. Tunica media: contains smooth muscle cells and external elastic lamina, responsible for constriction. Tunica externa (outermost): contains vasa vasora.