Changes

'''Menstruation''' occurs at the end of a [[placenta]]l [[mammal]]'s menstrual cycle. There are two types of menstruation:

'''Menstruation''' occurs at the end of a [[woman]]'s menstrual cycle. The lining of the [[uterus]] is shed and expelled from the body to prepare the uterus for a fertilized [[ovum]]. Menstruation occurs in humans and more developed apes, including [[gorillas]] and [[orangutan]]s <ref>[http://www.4woman.gov/faq/menstru.htm#4 Menstruation and the Menstrual Cycle, from the US Dept. of Health and Human Services]</ref> from [[puberty]] to [[menopause]].

* Overt menstruation, occuring in [[human]]s and [[great apes]], in which the lining of the [[uterus]] is shed and expelled from the body to prepare the uterus for a fertilized [[ovum]]<ref>[http://www.4woman.gov/faq/menstru.htm#4 Menstruation and the Menstrual Cycle, from the US Dept. of Health and Human Services]</ref>;

* Covert menstruation, occuring in all other placental mammals, in which the [[endometrium]] is reabsorbed.

 

==Menstruation and the Bible==

==Menstruation and the Bible==

Under [[Old Testament]] law, a woman was to be put apart during menstruation:

Under [[Old Testament]] law, a woman was to be put apart during menstruation: