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Oestrous Cycle - Anatomy & Physiology (view source)
Revision as of 11:25, 10 September 2008
, 11:25, 10 September 2008→Pro-Oestrus
* The phase immediately preceding oestrus.
* The phase immediately preceding oestrus.
* Lasts 2-5 days, depending on the species.
* Marked increase in reproductive activity.
* Marked increase in reproductive activity.
* Endocrine transition from progesterone to oestrogen dominance under the influence of gonadotrophins LH and FSH.
* Follicular growth and regression of the corpus luteum of the previous cycle (in polyoestrous species).
* Follicular growth and regression of the corpus luteum of the previous cycle (in polyoestrous species).
* Uterus enlarges slightly
* Uterus enlarges slightly