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any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body
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a small branch of an artery leading into capillaries
Arterioles
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the tissue that forms a single layer of cells lining various organs and cavities of the body, esp. the blood vessels, heart, and lymphatic vessels. It is formed from the embryonic mesoderm
endothelium
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the constriction of blood vessels, which increases blood pressure
vasoconstriction
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the dilatation of blood vessels, which decreases blood pressure
vasodilation
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Vasodilation refers to the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins, large arteries, and smaller arterioles. ...
Vasomotor fibers
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a very small vein, esp. one collecting blood from the capillaries.
Venules
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a device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
valves
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Arterioles that control the flow of blood through the capillary bed
resistance vessel
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any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the hear
Veins
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The blood vessels which hold the greatest portion (~70%) of the blood volume at any given moment in time; normally these are the large and medium-sized veins of the systemic circulation
Capacitance vessels
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