_______ are small vessels that directly link arterioles with venules.

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Metarterioles are small vessels that directly link arterioles with venules. They have the ability to regulate blood flow to capillaries by constricting or relaxing their smooth muscle cells, often called precapillary sphincters. Arteries and veins are larger blood vessels that do not directly link arterioles with venules. Capillaries are the smallest blood vessels that are responsible for gas exchange and nutrient exchange between blood and tissues.

_______ Are Small Vessels That Directly Link Arterioles with Venules