papilla (pap-il'lah). 1

The nipple. 2. Any minute soft or fleshy prominence or nipple-shaped projection. 3. See optic disk, calciform papillae, circumvallate papillae. Papillae of the tongue, situated near the base on the dorsal surface. In man they are from seven to twelve in number, and are arranged like a V with its point toward the throat. clavate papillae. See fungiform papillae, compound p. A p. that bears several minute secondary papillae, each having the structure of a simple p. conoidal papillae. See filiform papillae. dental p., dentin p. See tooth p. filiform papillae (of the tongue). Minute, conical or cylindrical, simple or compound eminences on the dorsum of the tongue, very numerous except near its base. Taste buds are not found in them, but their denser covering of horny epithelium suggests a mechanical use. fungiform papillae. Numerous small, rounded, deep-red eminences, with narrow bases, situated on the middle and anterior parts of the dorsum and especially along the sides of the tongue, gustatory papillae. Taste papillae; either (1) all the papillae of the tongue or (2) the circumvallate and fungiform papillae (i. e., those supplied with taste buds), hair p. A conical proce of the corium projecting upward into a corresponding depre ion in the end of the hair bulb. It is richly supplied with ve els and nerves, and nourishes the hair, lacrimal papillae. The little elevations in the edge of the eyelid occupied by the lacrimal puncta. lingual papillae. Small eminences covering the anterior two-thirds of the tongue. They include the circumvallate, filiform, fungiform and conical papillae, nerve papillae. Papillae of the skin containing tactile corpuscles, nervous plexuses, or the terminal nerve bulbs of Krause, and sometimes blood ve els. See tactile corpuscles, under corpuscles, and vascular papillae, optic p. See optic disk, under disk, papillae cutis. Conical prolongations of the corium with rounded or blunt tops, sometimes cleft into two or more points, when they are called compound papillae, p. duodenal is, p. duodeni. The slight eminence in the duodenum indicating the opening of the duct us choledochus communis, primary p. A p., either simple or compound, arising directly from the corium. secondary papillae. Papillae arising from a primary p. as a primary p. arises from the corium. See compound, simple p. An unbranched or undivided p. arising directly from the corium. tactile papillae. See nerve papillae. taste papillae. See gustatory papillae, tooth p. A proce of mucoid connective ti ue having the general appearance of the future tooth, which arises from the bottom of the dental groove and extends toward the enamel organ. In developed teeth the tooth p. is known as the tooth pulp, vascular papillae. Papillae of the skin to the tips of which one or more capillary loops extend. The presence of nerves is doubted. [Lat., dim. of papula, a pimple.]