glomus

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glomus (gloh-mŭs) n. (pl. glomera) a small communication between a tiny artery and a vein that is well supplied with sensory receptors. For example, glomera in the skin of the limbs are concerned with temperature regulation. g. jugulare a collection of paraganglion cells in close relation to the internal jugular vein at its origin at the base of the skull.