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Parturition Endocrine Control - Anatomy & Physiology (view source)
Revision as of 13:17, 2 July 2008
, 13:17, 2 July 2008no edit summary
''Species that depend on Placental Progesterone in late pregnancy (Ewe,Guinea Pig,Queen,Mare)''
''Species that depend on Placental Progesterone in late pregnancy (Ewe,Guinea Pig,Queen,Mare)''
* As previously explained, parturition is dependent on a rise in foetal Cortisol. However, in this case, the rise in foetal cortisol leads to a decrease in '''maternal''' Progesterone.
* Foetal Cortisol causes upregulation of the enzymes '''17α Hydroxylase, C17-C20-lyase and Aromatase''' in order to increase the Oestrogen:Progesterone ratio.