| papilla lacrimalis | A slight projection from the margin of each eyelid near the medial commisure, in the centre of which is the lacrimal punctum (opening of the lacrimal duct). Synonym: papilla lacrimalis. (05 Mar 2000) |
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| papilla lingualis | One of numerous variously shaped projections of the mucous membrane of the dorsum of the tongue. Synonym: papilla lingualis. The lingual portion of the gingiva filling the interproximal space between adjacent teeth; in molar and premolar areas, there may be separate lingual and buccal interdental papillae. See: interdental papilla. (05 Mar 2000) |
| papilla mammae | 1. <anatomy> The protuberance through which milk is drawn from the breast or mamma; the mammilla; a teat; a pap. 2. The orifice at which any animal liquid, as the oil from an oil bag, is discharged. 3. Any small projection or article in which there is an orifice for discharging a fluid, or for other purposes; as, the nipple of a nursing bottle; the nipple of a percussion lock, or that part on which the cap is put and through which the fire passes to the charge. 4. <mechanics> A pipe fitting, consisting of a short piece of pipe, usually provided with a screw thread at each end, for connecting two other fittings. Solder nipple, a short pipe, usually of brass, one end of which is tapered and adapted for attachment to the end of a lead pipe by soldering. Origin: Formerly neble, a dim. Of neb. See Neb, Nib. Source: Websters Dictionary (01 Mar 1998) |
| papilla nervi optici | The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve. Because the retina at the optic disk has no photoreceptors there is a corresponding blind spot in the visual field. (12 Dec 1998) |
| papilla of breast | 1. <anatomy> The protuberance through which milk is drawn from the breast or mamma; the mammilla; a teat; a pap. 2. The orifice at which any animal liquid, as the oil from an oil bag, is discharged. 3. Any small projection or article in which there is an orifice for discharging a fluid, or for other purposes; as, the nipple of a nursing bottle; the nipple of a percussion lock, or that part on which the cap is put and through which the fire passes to the charge. 4. <mechanics> A pipe fitting, consisting of a short piece of pipe, usually provided with a screw thread at each end, for connecting two other fittings. Solder nipple, a short pipe, usually of brass, one end of which is tapered and adapted for attachment to the end of a lead pipe by soldering. Origin: Formerly neble, a dim. Of neb. See Neb, Nib. Source: Websters Dictionary (01 Mar 1998) |
| papilla of Vater | Point of opening of the common bile duct and pancreatic duct into the duodenum; it is located posteriorly in the descending part of the duodenum. Synonym: papilla duodeni major, bile papilla, papilla of Vater, Santorini's major caruncle. (05 Mar 2000) |
| papilla parotidea | The projection at the opening of the parotid duct into the vestibule of the mouth opposite the neck of the upper second molar tooth. Synonym: papilla parotidea. (05 Mar 2000) |
| papilla pili | A knoblike indentation of the bottom of the hair follicle, upon which the hair bulb fits like a cap; it is derived from the corium and contains vascular loops for the nourishment of the hair root. Synonym: hair papilla. (05 Mar 2000) |
| papilla renalis | <anatomy> The apex of a renal pyramid that projects into a minor calyx; some 10 to 25 openings of papillary ducts occur on its tip, forming the area cribrosa. Synonym: papilla renalis. (07 Mar 2000) |
| papilla vallata | One of eight or ten projections from the dorsum of the tongue forming a row anterior to and parallel with the sulcus terminalis; each papilla is surrounded by a circular trench (fossa) having a slightly raised outer wall (vallum); on the sides of the vallate papilla and the opposed margin of the vallum are numerous taste buds. Synonym: papilla vallata, circumvallate papilla. Vascular papillae, dermal papillae containing vascular loops. (05 Mar 2000) |
| parotid papilla | The projection at the opening of the parotid duct into the vestibule of the mouth opposite the neck of the upper second molar tooth. Synonym: papilla parotidea. (05 Mar 2000) |
| renal papilla | <anatomy> The apex of a renal pyramid that projects into a minor calyx; some 10 to 25 openings of papillary ducts occur on its tip, forming the area cribrosa. Synonym: papilla renalis. (07 Mar 2000) |
| retrocuspid papilla | A small tissue tag located on the mandibular gingiva lingual to the cuspid teeth; usually occurs bilaterally, is more commonly identified in children, and is considered a normal anatomic structure. Tactile papilla, one of the papillae of the dermis containing a tactile cell or corpuscle. (05 Mar 2000) |
| circumvallate papilla | One of eight or ten projections from the dorsum of the tongue forming a row anterior to and parallel with the sulcus terminalis; each papilla is surrounded by a circular trench (fossa) having a slightly raised outer wall (vallum); on the sides of the vallate papilla and the opposed margin of the vallum are numerous taste buds. Synonym: papilla vallata, circumvallate papilla. Vascular papillae, dermal papillae containing vascular loops. (05 Mar 2000) |
| minor duodenal papilla | The site of the opening of the accessory pancreatic duct into the duodenum, located anterior to and slightly superior to the major papilla. Synonym: papilla duodeni minor, Santorini's minor caruncle. Nerve papilla, one of the papillae in the dermis containing a tactile corpuscle or other form of end organ. Synonym: neurothele. (05 Mar 2000) |