dermal papilla

dermal papilla
papilla dermidis 1. [TA] any of the conical extensions of the collagen fibers, the capillary blood vessels, and sometimes the nerves of the papillary layer of the dermis into corresponding spaces among the downward- or inward-projecting rete ridges on the under surface of the epidermis. On the forehead and ear these are less prominent; on the face, neck, and pubes the relations are reversed and rete ridges extend inward or downward into spaces among a network of dermal ridges. 2. p. pili.

Medical dictionary. 2011.

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