Reproductive Cycles

Sexual reproduction in most species is regulated by regular endocrine changes, cycles, in the female. There are a number of different species-specific female hormonal cycles which can regulate reproduction.

Menstrual Cycle

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.

Links: Menstrual Cycle | original page

Estrous Cycle

The estrous cycle (British spelling, oestrous) is the main reproductive cycle of other species females of non-primate vertebrates, for example rats, mice, horses, pig have this form of reproductive cycle. There are also a variety of different 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)

Links: Estrous Cycle | original page

External Links

• Human Menstrual Cycle
• Estrous Cycle

Glossary Links

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Cite this page: Hill, M.A. (2024, April 20) Embryology Reproductive Cycles. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Reproductive_Cycles

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G