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Lactiferous ducts are ducts that converge and form a branched system connecting the nipple to the lobules of the mammary gland. When lactogenesis occurs, under the influence of hormones, the milk is moved to the nipple by the action of smooth muscle contractions along the ductal system to the tip of the nipple.
Terminal end buds (TEBs) are highly proliferative structures at the ends of elongating lactiferous ducts which are involved in development of the mammary glands. [1] TEBs are responsible for the formation of the mammary ductal tree during female puberty .
The intercalated duct, also called intercalary duct (ducts of Boll), is the portion of an exocrine gland leading directly from the acinus to a striated duct. The intercalated duct forms part of the intralobular duct. This duct has the thinnest epithelium of any part of the duct system, and the epithelium is usually classified as "low" simple ...
A mammary alveolus (pl.: alveoli, from Latin alveolus, "little cavity") is a small cavity or sac found in the mammary gland. [1] [2] Mammary alveoli are the site of milk production and storage in the mammary gland.
The nipple is a raised region of tissue on the surface of the breast from which, in lactating females, milk from the mammary gland leaves the body through the lactiferous ducts to nurse an infant. [1] [2] The milk can flow through the nipple passively, or it can be ejected by smooth muscle contractions that occur along with the ductal system.
Diagram of the anatomy of the female breast. (1) Chest wall, (2) Pectoral muscles, (3) Lobules, (4) Nipple surface, (5) Areola, (6) Lactiferous duct, (7) Fatty tissue, (8) Skin. Image illustrated by Patrick J. Lynch, and reworked by Morgoth666 to add labels. Similar to the breast, each NAC is unique.
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A mammary gland is an exocrine gland in humans and other mammals that produces milk to feed young offspring.Mammals get their name from the Latin word mamma, "breast".The mammary glands are arranged in organs such as the breasts in primates (for example, humans and chimpanzees), the udder in ruminants (for example, cows, goats, sheep, and deer), and the dugs of other animals (for example, dogs ...