breasts - 4/26/2009 BREASTS BREASTS ANATOMY The Mammary...

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4/26/2009 1 BREASTS ANATOMY BREASTS ANATOMY The Mammary Glands Figure 28.23a-c
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4/26/2009 2 BREASTS ± Organs of sexual arousal ± Breast size is determined primarily by ± Contain mammary glands ± Consist of connective tissue that serves as support ± Each breast contain 15-25 clusters called lobes ± Each lobule is connected by ducts that open into the nipple heredity ± Size also depends on the existing fat and glandular tissue ± Breasts may exhibit cyclical changes, including increased swelling and tenderness prior to menstruation Benign breast changes refer to 3 open into the nipples ± The nipples are made up of erectile tissue ± The pigmented around the nipples are called the areola ± Benign breast changes refer to fibrocystic disease ± Lumps or masses that are noncancerous Breast ± The breasts of an adult ± The breast has no woman are milk-producing, tear-shaped glands. ± They are supported by and attached to the front of the chest wall on either side of the breast bone or sternum by li t The breast has no muscle tissue. A layer of fat surrounds the glands and extends throughout the breas ligaments. ± They rest on the pectoralis major throughout the breast
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4/26/2009 3 Breast profile: A ducts B lobules C dilated section of duct to hold milk D nipple E fat F pectoralis major muscle G chest wall/rib cage Enlargement: A l d t ll normal duct cells B basement membrane C lumen (center of duct) Anatomy 1.15-20 lobes 2.lobe:lobules, small branch, and larger ducts.
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This note was uploaded on 10/18/2010 for the course BIO 2402 taught by Professor Opara during the Spring '10 term at Lone Star College.

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breasts - 4/26/2009 BREASTS BREASTS ANATOMY The Mammary...

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