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Mammary Gland - Anatomy & Physiology (view source)
Revision as of 08:00, 2 July 2008
, 08:00, 2 July 2008no edit summary
* Lobes and lobules are drained by lactiferous ducts into the '''gland sinus''', which is continuous with the '''teat sinus'''. Epithelium lining lactiferous ducts and the sinus is two-layered cuboidal.
* Lobes and lobules are drained by lactiferous ducts into the '''gland sinus''', which is continuous with the '''teat sinus'''. Epithelium lining lactiferous ducts and the sinus is two-layered cuboidal.
* A '''teat canal''' connects the teat sinus to the exterior. The lining is stratified squamous epithelium. Circular smooth muscle in the wall of the canal forms a '''sphincter'''. Between milkings, the narrow lumen of the teat canal is filled with a soft keratin plug to prevent bacteria entering the teat sinus and prevent milk leakage.
* A '''teat canal''' connects the teat sinus to the exterior. The lining is stratified squamous epithelium. Circular smooth muscle in the wall of the canal forms a '''sphincter'''. Between milkings, the narrow lumen of the teat canal is filled with a soft keratin plug to prevent bacteria entering the teat sinus and prevent milk leakage.
[[Image:Active Mammary Gland.jpg|left|thumb|250px|<small><center> The Active Mammary Gland (Courtesy of Tanya Hopcroft (RVC))</center></small>]]
[[Image:Active Mammary Gland.jpg|left|thumb|250px|<small><center> The Active Mammary Gland (Courtesy of Tanya Hopcroft (RVC))</center></small>]]
[[Image:Active Mammary Gland high power.jpg|right|thumb|250px|<small><center> The Active Mammary Gland at High Power (Courtesy of Tanya Hopcroft (RVC))</center></small>]]