mammary glands definition
fd25e90e749b701e520c311418b4b6ea
Mammary gland A mammary gland is an organ in female mammals that produces milk to feed young offspring.Mammals get their name from the word mammary.. In humans, the mammary glands are situated in the breasts. In ruminants such as cows, goats, and deer, the mammary glands are contained in the udders.The mammary glands of mammals other than primates, such as dogs and cats, are sometimes called dugs.fter delivery, lactation occurs within the mammary gland; lactation involves the secretion of milk by the luminal cells in the alveoli. Contraction of the myoepithelial cells surrounding the alveoli will cause the milk to be ejected through the ducts and into the nipple for the suckling pups.
c02e19a6b0ff734d7ffdd3586613de26
- A mammary gland is an organ in female mammals that produces milk to feed young offspring. Mammals get their name from the word mammary.. In humans, the mammary glands are situated in the breasts.In ruminants such as cows, goats, and deer, the mammary glands are contained in the udders.ammals get their name from the word mammary.. In humans, the mammary glands are situated in the breasts. In ruminants such as cows, goats, and deer, the mammary glands are contained in the udders.
a7f498f519643cac82e35ba579049e6b
Milk This article is about the fluid produced by the mammary glands of mammals. For milk derived from plants, see Plant milk. For other uses of the word, see Milk (disambiguation).
f74480be0ff84b132448c7a94f2d3219
gland Definition of gland 1 a: a specialized cell, group of cells, or organ of endothelial origin that selectively removes materials from the blood, concentrates or alters them, and secretes them for further use in the body or for elimination from the body — compare endocrine gland, exocrine gland
5383a3fe568d832bf0faa32f2064a28c
- A mammary gland is an organ in female mammals that produces milk to feed young offspring. Describe the function and structure of mammary glands. Mammary glands are not associated with the female reproductive tract, but are developed as secondary sex characteristics generally specific to reproductive-age females.
b390b0579c94f6dc9b410903d79aefb7
thymus 1 Anatomya ductless, butterfly-shaped gland lying at the base of the neck, formed mostly of lymphatic tissue and aiding in the production of T cells of the immune system: after puberty, the lymphatic tissue gradually degenerates. 2  Also called thy′mus gland′.
549657f06d767295fe7ee3b2baaeae5b
Comparative Lactation - Cats and Dogs The teat sinus extends upward from the teat canal into the parenchyma of the gland. The teat sinuses are small uniformly wide passages and not wide dilations as in cattle. The parenchyma, or secretory tissue, is present only during pregnancy, pseudopregnancy, during lactation, and for 40 to 50 days after weaning. The blood supply of the mammary glands of dogs and cats are similar except for the thoracic glands. In the dog the first pair of thoracic mammary glands receives blood from two sternal branches of the internal thoracic artery, passing between the first and second ribs.
c6be5af7ff394c4efafc3a456e32b832
- ‘Functionally, the mammary glands produce milk; structurally, they are modified sweat glands.’ ‘Detecting tumours in the breasts of young women is difficult because of the density of the mammary glands, and this problem is particularly pronounced among pregnant and lactating women.’
5261f79a4d08a90f6041821982e3c299
nipple (ˈnɪpəl) n. 1. (Anatomy) Also called: mamilla, papilla or teat the small conical projection in the centre of the areola of each breast, which in women contains the outlet of the milk ducts. 2. something resembling a nipple in shape or function.
9e1044844fc947780df9292e812b758d
mammary gland Noun. 1. mammary gland-milk-secreting organ of female mammals. mamma. female mammal-animals that nourish their young with milk. dug-an udder or breast or teat. udder, bag-mammary gland of bovids (cows and sheep and goats).ny of the milk-producing glands in female mammals, consisting of lobes containing clusters of alveoli with a system of ducts to convey the milk to an external nipple or teat. These glands typically occur in pairs and begin secreting milk when young are born.
44ac2d2af8d44093d4515a86c9149242
gland duct gland, exocrine, exocrine gland - a gland that secretes externally through a duct. ductless gland, endocrine gland, endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream. acinus - one of the small sacs or saclike dilations in a compound gland.
7cd6649b28fb336b46e1acf4998d5b0f
Definitions &Translations A mammary gland is an organ in female mammals that produces milk to feed young offspring.Mammals get their name from the word mammary.. In humans, the mammary glands are situated in the breasts. In ruminants such as cows, goats, and deer, the mammary glands are contained in the udders. mammary gland is an organ in female mammals that produces milk to feed young offspring.
7f14107c66aa672bf3166135b7cd391e
Mammary Gland Involution Lactation persistency is of particular concern in the production of milk. Mammary tissue function declines after peak lactation and this is at least in part due to a decrease in mammary cell number (Knight and Peaker 1984; Wilde and Knight 1989).
625ce0b2eaa53c12b7ce9bb95d09f734
gland Related to gland: endocrine gland, parotid gland, pituitary gland, pineal gland, prostate gland, thymus gland. (glănd) n. 1. a. Any of various organs or cell groups, such as the adrenal glands and the salivary glands, that are of endothelial origin and secrete a substance that is used or excreted by the body. b. Any of various organs, such as lymph nodes, that resemble true glands but perform a nonsecretory function.
b03f963630599af6d14a1f0f19229a5f
Passport Application & Renewal Who Can Renew. You may renew your U.S. passport by mail, if all of the following apply to your situation: 1  Your undamaged passport can be submitted with your application. 2  You received your passport within the past 15 years.3  You were at least 16 years old when you were issued the passport.ho Can Renew. You may renew your U.S. passport by mail, if all of the following apply to your situation: 1  Your undamaged passport can be submitted with your application. 2  You received your passport within the past 15 years.
3ae4fa352aac1433bbda150e4cff459c
MAMMARY GLAND | Anatomy Because the mammary glands and teatsare close together, the portion of the milkingmachine attached to the animal (teat-cups and teatcluster) can be relatively compact. For those not fa-miliar with milking and management of moderndairy cows, the udder of a lactating Holstein cowfor example can be rather massive.ecause the mammary glands and teatsare close together, the portion of the milkingmachine attached to the animal (teat-cups and teatcluster) can be relatively compact. For those not fa-miliar with milking and management of moderndairy cows, the udder of a lactating Holstein cowfor example can be rather massive.
924d9e49a47f0bb61fe0269540d53411
mammary gland mammary gland. n. 1. (Anatomy) any of the milk-producing glands in mammals. In higher mammals each gland consists of a network of tubes and cavities connected to the exterior by a nipple. 2. (Zoology) any of the milk-producing glands in mammals.am·ma·ry gland. One of the glands in female mammals that produces milk. It is present but undeveloped in the male. In most animals, the gland opens onto the surface by means of a nipple or teat.
88b7604d3ff699cbdf5235f3ba32117c
mammary gland mam·ma·ry gland. One of the glands in female mammals that produces milk. It is present but undeveloped in the male. In most animals, the gland opens onto the surface by means of a nipple or teat.am·ma·ry gland. One of the glands in female mammals that produces milk. It is present but undeveloped in the male. In most animals, the gland opens onto the surface by means of a nipple or teat.
ad01a56112be3c53ab702f2183e3be93
The Eight Main Mammal Characteristics Mammary Glands. Mammals nurse their young with milk produced by mammary glands. Mammary glands, like hair, are a uniquely mammalian trait. Though present in both males and females, in most mammal species mammary glands only fully develop in females.The exception to this rule is the male Dayak fruit bat, which has mammary glands that produce milk to feed its young.ot all mammals have nipples. Monotremes, which include echidnas and the platypus, diverged from other mammals early in their evolution. Monotremes lack nipples and instead secrete the milk produced by their mammary glands through ducts in their abdomen.
06ee224be243acae4b2f87ff1e63e68f
- Mammary glands are the organs in female mammals that produce and secrete milk for the nourishment of newborn offspring. It is one of the defining characteristics of mammals and the source of the term Mammalia, given by Carolus Linnaeus.
30c831c86035144e452cefe463db9abb
- The mammary gland is a gland located in the breasts of females that is responsible for lactation, or the production of milk. Both males and females have glandular tissue within the breasts; however, in females the glandular tissue begins to develop after puberty in response to estrogen release.
ef5450d4cdebd33555fa5a5b41e8ebf0
1. Introduction Basics of the mammary gland morphology and physiology. McManaman and Neville (2003) state that a lactating mammary gland is composed of a branching network of ducts formed of epithelial cells ending in extensive lobulo-alveolar clusters which are the sites of milk secretion.he tight junction leakage of mastitis is accompanied by a decrease in the rate of milk synthesis and secretion of the major specific milk constituents [6], while the secretion of other proteins like lactoferrin is simultaneously up-regulated [3, 8].
360d1bdfa48009ee6ce6a73a90ede8ab
Human Physiology/Print Version 1 The basic components of a mature mammary gland are the alveoli (hollow cavities, a few millimeters large) lined with milk-secreting cuboidal cells and surrounded by myoepithelial cells.  Alveoli join up to form groups known as lobules, and each lobule has a lactiferous duct that drains into openings in the nipple.
b405cc7caf964a07084e24b78e1a46b5
mammary gland mammary gland. organ of the female mammal that produces and secretes milk for the nourishment of the young. A mammal may have from 1 to 11 pairs of mammary glands, depending on the species.Generally, those mammals that bear larger litters have more glands. The mammary gland of the cow and of some other mammals is known as the udder.ammary gland. A unique anatomical structure of mammals that secretes milk for the nourishment of the newborn. The mammary gland contains thousands of milk-producing units called alveoli, each of which consists of a unicellular layer of epithelial cells arranged in a spheroid structure.
4fc7bad8bee4bd0a332584124c8c33c7
Medical Definition of Breast Medical Definition of Breast. Breast: The breast refers to the front of the chest or, more specifically, to the mammary gland. The mammary gland is a milk producing gland. It is composed largely of fat. Within the mammary gland is a complex network of branching ducts.
d4d03f698a0829aeecd10f28cb2685b9
- 1 For the ongoing synthesis and secretion of human milk, the mammary gland must receive hormonal signals. 2  These signals, which are in direct response to stimulation of the nipple and areola (mammae), are then relayed to the central nervous system. 3  This cyclical process of milk synthesis and secretion is termed lactation.