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Placenta - Anatomy & Physiology (view source)
Revision as of 14:17, 12 July 2011
, 14:17, 12 July 2011→Endocrine
The types of hormones and their effects are provided in detail at [[Placenta Endocrine Function - Anatomy & Physiology|Placental Endocrine Function]].
The types of hormones and their effects are provided in detail at [[Placenta Endocrine Function - Anatomy & Physiology|Placental Endocrine Function]].
==Placental Problems==
===Freemartinism===
Freemartinism is a condition usually found in bovine species (although it is found in other species) and occurs in the female offspring of dizygotic twins in a mixed sex pregnancy, i.e. a male and female pair of twins. Placental fusion between the male and female fetuses occurs and this permits the exchange of fetal cells and hormones. Testicular hormones from the male can result in the androgenisation of the female fetus resulting in a "chimeric" female (XX/XY)which will be sterile.
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Freemartins occur in 1% of births and in 99% of cases, the female is rendered sterile.
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[[Category:To Do - A&P]]
[[Category:To Do - A&P]]
[[Category:Pregnancy and Parturition]]
[[Category:Pregnancy and Parturition]]