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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
Gland types
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Merocrine ie
Apocrine ie Holocrine ie |
Sweat
Mammary Sebaceous oily glands |
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Mammary glands are modified =
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Modified sweat glands
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Sebaceous Glands are
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oily glands
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Breasts enlarge due to
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ovarian hormones
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Milk production occurs by
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prolactin
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myoepithelial cells are stimulated by _________? which contract and cause milk let down.
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Oxytocin
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Breasts rest on =
2ct |
2/3 rests on the pectoral fascia (fascia overlying the pectoralis major muscle);
1/3 rests on the fascia covering the serratus anterior muscle |
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axillary tail (of Spence);
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discovered when it may enlarge during a menstrual cycle and may be mistaken for a “lump” or enlarged lymph nodes
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retromammary space
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allows the breast some degree of movement on the pectoral fascia
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suspensory ligaments (of Cooper)
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lobes separated by fibrous septa which help support the lobes of the gland
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Blood Supply
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Arteries
internal thoracic artery thoracic aorta axillary artery Veins |
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Blood Supply
Arteries internal thoracic artery |
medial mammary branches of perforating branches and anterior intercostal branches
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Blood Supply
Arteries thoracic aorta |
2nd, 3rd, and 4th posterior intercostal arteries
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Blood Supply
Arteries axillary artery |
lateral thoracic artery and thoracoacromial artery
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Blood Supply
Arteries Veins describe route |
correspond to arteries; venous drainage mainly to the axillary vein
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Lymph Drainage
lateral quadrants – |
anterior axillary or pectoral group of nodes ( -central axillary nodes - apical axillary nodes)
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Lymph Drainage
medial quadrants |
– internal thoracic (anterior mediastinal) group of nodes
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Nerve Supply
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– anterior and lateral cutaneous branches of the 4th – 6th intercostal nerves sensory fibers to the skin of the breast and sympathetic fibers to the blood vessels in the breast and smooth muscle in the overlying skin and nipple
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gynecomastia - enlargement of the male breasts mainly due to
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ductal proliferation and periductal edema
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gynecomastia
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- due to ductal proliferation and periductal edema
-occurs in normal adolescence commonly -accompany aging - drug related - diethylstilbestrol treatment for prostate cancer -change in the metabolism of sex hormones by the liver (liver cirrhosis) -may be genetic – Klinefelter syndrome (XXY trisomy) -ductal proliferation with periductal edema |
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polymastia
polythelia |
(supernumerary breasts)
(supernumerary nipples) |
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