|Embryology - 19 Feb 2017 Expand to Translate|
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Sexual reproduction in most species is regulated by regular endocrine changes, or cycles, in the female. These cycles begin postnatally, function for variable times and can then decrease or cease entirely. There are a number of different species-specific female hormonal cycles which can regulate reproduction.
Human reproduction is regulated in females the menstrual cycle, a regular cyclic hormonal change which coordinate changes in the ovary and internal reproductive tract.
This cycle commences at puberty and ends at menopause.
The estrous cycle (British spelling, oestrous) is the main reproductive cycle of females of other non-primate species vertebrates.
For example: rats, mice, horses, pigs all have this form of reproductive cycle.
There are also a variety of different estrous forms:
- Polyestrous Animals - Estrous cycles throughout the year (cattle, pigs, mouse, rat).
- Seasonally Polyestrous Animals - Animals that have multiple estrous cycles only during certain periods of the year (horses, sheep, goats, deer, cats).
- Monestrous Animals - Animals that have one estrous cycle per year (dogs, wolves, foxes, and bear)
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Cite this page: Hill, M.A. 2017 Embryology Reproductive Cycles. Retrieved February 19, 2017, from https://embryology.med.unsw.edu.au/embryology/index.php/Reproductive_Cycles
- © Dr Mark Hill 2017, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G