Answer: A small almost microscopic artery that delivers blood to a capillary
Arteriole
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noun
Word Origin mid 19th century: from French artériole diminutive of artère (see artery).
Derivatives
Scrabble Points: 9
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An arteriole is a small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries. Arterioles have muscular walls (usually only one to two layers of smooth muscle cells) and are the primary site of vascular resistance.
Arteriole definition is - any of the small terminal twigs of an artery that ends in capillaries.
The arterioles are the smallest arteries with a caliber of between 0.3 mm and 10 microns (µm). The largest arterioles are endowed with three tunica but the smallest arterioles which lead into capillary beds constitutes no more than a single layer of smooth muscle cells arranged in a spiral around endothelium.
The arterioles are the smallest arteries with a caliber of between 0.3 mm and 10 microns (µm). The largest arterioles are endowed with three tunica but the smallest arterioles which lead into capillary beds constitutes no more than a single layer of smooth muscle cells arranged in a spiral around endothelium.
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Anatomy. any of the smallest branches of an arter...