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Reproductive System Overview - Anatomy & Physiology (view source)
Revision as of 09:48, 17 June 2010
, 09:48, 17 June 2010→Pregnanacy and Parturition
== Pregnanacy and Parturition ==
== Pregnanacy and Parturition ==
In most domestic species, pregnancy is maintained by hormonal feedback from the corpus luteum and, in many species, the placenta. The corpus luteum is maintained in early pregnancy and progesterone levels remain elevated as a result. This maintains negative feedback to the hypothalamus and anterior pituitary gland which inhibits further follicular development and ovulation. In polyoestrous species, it prevents the return to oestrus. In many species the placenta will take over or supplement the corpus luteum as the source of progesterone during pregnancy.
* [[Gestation -Reference Table of Gestation Lengths in Various Species - Anatomy & Physiology|Summary of Gestation Lengths in Various Species]]
* [[Gestation -Reference Table of Gestation Lengths in Various Species - Anatomy & Physiology|Summary of Gestation Lengths in Various Species]]