lactiferous ducts(redirected from mamillary ducts)
one of the ducts, numbering 15-20, which drain the lobes of the mammary gland; they open at the nipple.
lac·tif·er·ous ducts(lak-tif'ĕr-ŭs dŭkts) [TA]
appearing first as epithelial diverticula which invade the mammary mesenchyme from the mammary buds, the precursors of the teats, these solid cords of cells later cavitate to produce lactiferous ducts.
large cavity, continuous with the lactiferous ducts in mammary tissue, which serves as a reservoir for accumulated milk in the mammary gland until it is released at milking or suckling via the teat sinus and teat canal; is a combination of gland and teat sinuses.