Anatomy and Cell Biology 3319 Lecture Notes - Lecture 7: Dense Irregular Connective Tissue, Lactiferous Duct, Mammary Gland
12 Apr 2016
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Suggested reading: pawlina 7th ed. p. 866 872 (6th ed. p. 853 870) Learning objectives: describe the general organization of the lactating breast, describe the development of the mammary gland, including stimulating hormones, list the histological changes that occur to the mammary gland during puberty, pregnancy, and lactation. Differentiate the stages in a light micrograph: list the components of milk and their mechanisms of exocrine secretion. Nipple raised area where lactiferous ducts open. Areola pigmented area surrounding the nipple. Mammary gland: compound tubuloalvolar gland, lobule one duct and several alveoli (secretory acini, lobe several lobules connected to one lactiferous sinus by a lactiferous duct. Connective tissue: intralobular connective tissue loose connective tissue directly surrounding alveoli and smaller ducts. Derived from papillary layer of dermis: interlobular connective tissue dense irregular connective tissue with adipose tissue. Resemble apocrine sweat glands in their structure and mode of development. Dermal mesenchyme induces formation of epithelial bud.
