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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.

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Mammary glands for different species

MAMMARY GLANDSFOR DIFFERENTSPECIES

Leo Timms

Iowa State University


Mammary glands
MAMMARY GLANDS

  • Similar development

  • Similar hormones

  • Species differences

  • Similar anatomy

    - epithelium ( duct/secretory)

    - myoepithelial tissue

    - stromal tissue

  • WHAT ABOUT TEATS? #? PLACE?


Mammary glands1
MAMMARY GLANDS

  • Monotremes: no teats, lots of tubes!


Mammary glands2
MAMMARY GLANDS

  • Other classes: Teats

    - Different locations

    - Different numbers

    - Different # nipple openings / teat


Mammary glands3
MAMMARY GLANDS

thoracic

inguinal

abdominal


Mammary glands4
MAMMARY GLANDS

  • 4 abdominal; 15 openings / teat


Mammary glands5
MAMMARY GLANDS

  • Developmentally independent glands


Mammary glands6
MAMMARY GLANDS

  • 13 abdominal; 8 openings / teat


Mammary glands7
MAMMARY GLANDS

  • 2 thoracic, 6 abdominal, ; 3-7 openings / teat


Mammary glands8
MAMMARY GLANDS

  • 2 thor., 6 abdom. 2 ing., ; 8-10 openings/ teat


Mammary glands9
MAMMARY GLANDS

  • 4 thor., 2 abdom. 4 ing., ; 1 opening/ teat


Mammary glands10
MAMMARY GLANDS

  • 2 inguinal ; 1 opening/ teat


Mammary glands11
MAMMARY GLANDS

  • 2 inguinal ; 2 openings/ teat


Mammary glands12
MAMMARY GLANDS

  • 4 inguinal ; 1 opening/ teat


Mammary glands13
MAMMARY GLANDS

  • 2 inguinal ; 1 opening/ teat


Mammary glands14
MAMMARY GLANDS

  • 4 thor., 6 abdom. 2 ing., ; 2 openings/ teat


Mammary glands15
MAMMARY GLANDS

  • 2 thoracic ; 15-25 openings/ teat


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