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Unformatted text preview: d with an inner layer of
secretory epithelial cells that secrete milk. A lve o li – th e p rim a ry m a m m a ry s truc ture re s p o ns ib le fo r p ro d uc ing m ilk MAMMARY GLAND STRUCTURE
(b) Ducts Drain the alveoli. Lined with ductal epithelial cells. (c) Lobules Composed of multiple alveoli, along with the
finest of the ductal units. Mammary Gland Structure
Mammary End Bud Alveoli Lobules Species Differences
Species Prepubertal heifer (Capuco et al 2000) Prepubertal mouse (Ellis 1998) bovine tightly packed ducts murine widely spaced elongated ducts MAMMARY GLAND STRUCTURE
(d) Gland cistern Ducts drain into it.
(e) Teat cistern and streak canal
Channel that exits to the exterior. They open to the exterior through
opening (s) in the nipple. MAMMARY GLAND STRUCTURE MAMMARY GLAND STRUCTURE
(f) Myoepithelial cells Cover the alveoli and the ducts Smooth muscle cells that contract to
facilitate milk release, or milk let-down. Mammary Gland Alveolar-Lobule Structure STAGES OF MAMMARY GLAND
(a) Prepubertal Some general isometric growth i.e.
growing at the s...
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- Fall '12