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Blood for test

Terms in this set (49)

blood vessels
carry blood to and through the tissues and organs, deliver oxygen and nutrients; carry away waste; part of maintaining blood pressure
capillaries, arteries, veins
examples of blood vessels:
coronary artery
the vessels that supply the heart muscle with oxygen rich blood
capillary
blood vessels that distribute oxygenated blood from the arteries to the tissue and feed deoxygenated blood from tissue back into veins
diffusion
process where molecules move from and area which they are highly concentrated to a place where they are less concentrated
venule
a small vein that collects blood from capillaries
arteriole
a small branch of an artery leading into capillaries
vasoconstriction
narrowing of the blood vessels resulting from contraction of the muscular wall
vasodilation
dilation of blood vessels which decreases blood pressure
tunics
one of the coats of a blood vessel or other tubular structure
tunica intima
innermost layer of blood vessel made up of endothelial cells, in direct blood flow
tunica media
middle layer composed of bundles of elastic tissue, smooth muscle fibers, and fibrous tissue
tunica externa
the outermost layer composed of collagen
lumen
inside tunnel space of a blood vessel
arteries, arterioles, capillaries, capillary beds, venules, veins, heart
passage of blood throughout body:
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