circulatory Word Scramble
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Question | Answer |
in what direction does blood flow? | from higher to lower pressures |
describe arteries | carry oxygenated blood away from the heart, link the heart to arterioles, 100-80 mm/Hg, have three tunics |
describe the tunics of an artery | interna: endothelium & connective tissue, seperated by internal elastic lamina externa: collagen & elasticx fibers, innervated, nourished by capillaries called the vasa vasorum media: smooth muscle, thickest tunic, seperated by external elastic lamina |
how are deep tunics nourished? | by blood that passes through the lumen |
describe the contractility of arteries | sympathetic fibers innervate the tunica media... increased stimulation -> vasoconstriction, decreased stimulation -> vasodilation |
Created by:
mhaye26
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