mammary glands for different species
DESCRIPTION
MAMMARY GLANDS FOR DIFFERENT SPECIES. Leo Timms Iowa State University. MAMMARY GLANDS. Similar development Similar hormones Species differences Similar anatomy - epithelium ( duct/secretory) - myoepithelial tissue - stromal tissue WHAT ABOUT TEATS? #? PLACE?. MAMMARY GLANDS. - PowerPoint PPT PresentationTRANSCRIPT
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MAMMARY GLANDSFOR DIFFERENT
SPECIES
Leo TimmsIowa State University
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MAMMARY GLANDS• Similar development• Similar hormones• Species differences• Similar anatomy
- epithelium ( duct/secretory)- myoepithelial tissue
- stromal tissue• WHAT ABOUT TEATS? #? PLACE?
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MAMMARY GLANDS• Monotremes: no teats, lots of tubes!
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MAMMARY GLANDS
• Other classes: Teats - Different locations
- Different numbers - Different # nipple openings / teat
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MAMMARY GLANDSthoracic inguinal abdominal
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MAMMARY GLANDS
• 4 abdominal; 15 openings / teat
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MAMMARY GLANDS
• Developmentally independent glands
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MAMMARY GLANDS
• 13 abdominal; 8 openings / teat
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MAMMARY GLANDS
• 2 thoracic, 6 abdominal, ; 3-7 openings / teat
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MAMMARY GLANDS
• 2 thor., 6 abdom. 2 ing., ; 8-10 openings/ teat
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MAMMARY GLANDS
• 4 thor., 2 abdom. 4 ing., ; 1 opening/ teat
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MAMMARY GLANDS
• 2 inguinal ; 1 opening/ teat
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MAMMARY GLANDS
• 2 inguinal ; 2 openings/ teat
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MAMMARY GLANDS
• 4 inguinal ; 1 opening/ teat
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MAMMARY GLANDS
• 2 inguinal ; 1 opening/ teat
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MAMMARY GLANDS
• 4 thor., 6 abdom. 2 ing., ; 2 openings/ teat
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MAMMARY GLANDS
• 2 thoracic ; 15-25 openings/ teat