Menstrual Cycle: Difference between revisions
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This cycle differs from other non-primate female vertebrates (eg rats, mice, horses, pig) that have a reproductive cycle called the estrous cycle (oestrous, British spelling). | This cycle differs from other non-primate female vertebrates (eg rats, mice, horses, pig) that have a reproductive cycle called the estrous cycle (oestrous, British spelling). | ||
[[File:Menstrual cycle.png]] | [[File:Menstrual cycle.png|400px]] | ||
* The average menstrual cycle is 28 days with ovulation (egg release) occuring approximately the middle of the cycle. | * The average menstrual cycle is 28 days with ovulation (egg release) occuring approximately the middle of the cycle. | ||
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:'''Links''' [http://embryology.med.unsw.edu.au/wwwhuman/MCycle/Mcycle.htm original Human Menstrual Cycle page] | :'''Links''' [http://embryology.med.unsw.edu.au/wwwhuman/MCycle/Mcycle.htm original Human Menstrual Cycle page] | ||
==Additional Images== | ==Additional Images== | ||
Revision as of 09:18, 9 April 2010
Introduction
The human reproductive cycle, an cyclic endocrine regulated change in female anatomy and physiology that occur over 28 days (4 weeks, a lunar month) during reproductive life (between puberty and menopause). Endocrine changes during pregnancy block the menstrual cycle, which normally would shed the functional layer of the uterine lining each cycle.
This cycle differs from other non-primate female vertebrates (eg rats, mice, horses, pig) that have a reproductive cycle called the estrous cycle (oestrous, British spelling).
- The average menstrual cycle is 28 days with ovulation (egg release) occuring approximately the middle of the cycle.
- The last menstrual period is used clinically in determining developmental ages. (More Birth Date)
- Menstruation phase (period) is the loss of the uterus epithelial functional layer and occurs if fertilization and implantation has not occurred before the end of the current cycle.
Additional Images
Glossary Links
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Cite this page: Hill, M.A. (2024, June 17) Embryology Menstrual Cycle. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Menstrual_Cycle
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
