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the pigmented projection at the tip of each breast
; it is smaller in men than women. In women it gives outlet to the lactiferous ducts
. Called also mammary papilla
, and teat
any structure shaped like the nipple of the breast; see papilla
The nipples are located slightly to the side rather than in the middle of the breasts. Usually, the size of the nipple is in proportion to the size of the breast, but large nipples may be found on small breasts and vice versa.
Surrounding the nipple is a pigmented area called the areola. The color of the areola varies with the complexion. In childless women, it is usually reddish. During pregnancy it increases in size and darkens in color, becoming almost black in brunettes. The color fades after the milk-producing period ends. The tip of the female nipple contains tiny depressions that are openings of the lactiferous ducts. During pregnancy special care should be given the nipples. Any secretion that accumulates should be gently washed off. If the nipples are tender, the physician will advise the use of cold cream, cocoa butter, lanolin, or another emollient to increase their pliability.
nip·ple (nip'ĕl), [TA]
A bulblike or buttonlike projection at the apex of the breast on the surface of which the lactiferous ducts open; it is surrounded by a circular pigmented area, the areola.
[dim. of A.S. neb, beak, nose (?)]
nipple /nip·ple/ (nip´'l)
1. mammary papilla; the pigmented projection on the anterior surface of the breast, surrounded by the areola; in women it gives outlet to the lactiferous ducts.
2. any similarly shaped structure.
a. The small projection near the center of the mammary gland containing the outlets of the milk ducts through which young mammals obtain milk from the adult female; a teat.
b. A corresponding projection of the male breast.
a. The rubber cap on a bottle from which a baby nurses.
b. A pacifier for an infant.
a small cylindric, pigmented structure that projects just below the center of each breast. The tip of the nipple has about 20 tiny openings to the lactiferous ducts. The skin of the nipple is surrounded by the lighter pigmented skin of the areola. The depth of pigmentation of the nipple and areola in nulliparas varies from rosy pink to brown, depending on the complexion of the individual. In pregnancy the skin of the nipple darkens but loses some of its pigmentation when lactation is completed. Stimulation of the nipple in men and women causes the structure to become erect through the contraction of radiating smooth muscle bundles in the surrounding areola. In women the nipple enlarges somewhat and becomes more sensitive after puberty. Also called mammary papilla, papilla mammae,
nip·ple (nip'ĕl) [TA]
A blunt conic projection at the apex of the breast on the surface of which the lactiferous ducts open; it is surrounded by a circular pigmented area, the areola.
(2) , teat
(1) , thelium
[dim. of A.S. neb, beak]
nipple The conical or cylindrical projection from the breast that is surrounded by a darker areola. The female nipple is larger than that of the male and is perforated by the ducts of the milk-secreting segments of the breast.
nipple a conical projection at the centre of a mammary gland on which the milk ducts have outlets.
fleshy projection on each mammary gland of the bitch, queen and other species; exit for milk produced by the gland. In ruminants called the teat
nipple-shaped metal devices mounted on tanks of water or on mains pipes that have a ball in the point and from which animals can get a sufficient daily intake of water by licking or, in the case of birds, pecking the tip of the device.
Patient discussion about nipple
Q. I am observing some change in the nipple of my left breast. Can anyone give information? I am 44 year old women and from some days I am observing some change in the nipple of my left breast. My nipple is drawn inside. My haggard nipple apart from itching burns as well. The size of my left breast is increased. Some bloody discharge from nipple is giving indication that there is something happening wrong. I doubt if it may be a breast cancer. Can anyone give some information?
A. the fact that bloody discharge from the nipple is probably a bad sign is clear. now what you need to do is to go and see a Dr. about it. it can be an infection in the mammary glands, or even Fibrocystic breast disease. so get yourself to a Dr....More discussions about nipple