Blood Vessels
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| arteries, veins, capillaries | show 🗑
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| show | arteries
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| blood vessels that return blood toward the heart from the circulation | show 🗑
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| show | capillaries
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| show | lumen
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| single layer of simple squamous cells that line lumen of all vessels | show 🗑
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| show | tunica intima
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| show | tunica media
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| show | tunica externa
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| tunica externa can also be referred to as tunica __ | show 🗑
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| tunica intima is the tunic that is | show 🗑
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| tunica intima endothelium is made up of | show 🗑
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| show | subendothelial layer
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| show | circularly arranged smooth muscle cells & sheets of elastin
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| activity of muscles in tunica media is regulated by sympathetic __ __ fibers of autonomic nervous system & battery of chemicals | show 🗑
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| reduction in lumen diameter as smooth muscle contracts | show 🗑
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| increase in lumen diameter as smooth muscle relaxes | show 🗑
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| show | vasa vasorum
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| vasa vasorum means | show 🗑
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| show | elastic arteries
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| show | 2.5 to 1 cm
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| show | low-resistance
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| show | conducting arteries
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| in elastic arteries, tunica __ contains most elastin | show 🗑
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| show | muscular
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| deliver blood to specific body organs & account for most of named arteries | show 🗑
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| show | 1 cm to 0.3 mm
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| muscular arteries have __ tunica media of all vessels | show 🗑
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| muscular arteries are more active in __ & less __ | show 🗑
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| in muscular arteries there is a(n) __ __ on each face of tunica media | show 🗑
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| smallest of arteries | show 🗑
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| arterioles have lumen diameter ranging from | show 🗑
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| show | three
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| show | smooth muscle
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| show | single layer
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| smallest of the blood vessels and the sites of exchange between the blood and tissue cells | show 🗑
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| capillaries walls consist of just thin tunica __ | show 🗑
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| show | pericytes
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| show | strategic locations
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| average capillary length | show 🗑
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| show | 8-10 microns
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| capillaries abundant in skin & muscles; most common; continuous, endothelial cells provide uninterrupted lining adjacent cells joined laterally by tight junctions | show 🗑
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| show | tight junctions
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| incomplete/gaps of unjoined membrane in tight junctions, just larger enough to allow limited passage of fluids & small solutes | show 🗑
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| show | pinocytotic vesicles
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| tight junctions of continuous capillaries are complete & extend around entire perimeter of endothelial cells in | show 🗑
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| show | fenestrated capillaries
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| fenestrated capillaries are found wherever __ __ absorption/filtrate formation occurs | show 🗑
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| show | elastic arteries
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| show | fenestrated
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| show | sinusoids
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| show | liver, bone marrow, spleen
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| show | venules
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| smallest venules; porous; allow fluid & WBCs to pass from the blood to tissues | show 🗑
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| show | veins
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| veins are composed of 3 tunics, with a __ tunica media & __ tunica externa | show 🗑
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| veins are __ __, or capacitance vessels, that contain 65% of blood | show 🗑
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| show | lower
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| PPT p7 | show 🗑
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Created by:
MatthewToddH
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