What are menstruations?

Answer 1

A period, or menstruation, is the shedding of the endometrium - the uterine lining. Menstruation is also known as menses. All female humans, as well as some other female mammals, have regular periods during their reproductive age. Menstruation which includes bleeding from the vagina is found mainly among humans and similar animals, such as primates. In many mammals, the endometrium is reabsorbed by the animal. As far as humans are concerned a period is a bleed from the womb (uterus) that is released through the vagina. Women have a period every 28 days approximately. However, some women may have a 24-day cycle while other may have a 35-day one. A period is part of the woman's menstrual cycle. The word "menses" comes from the Latin menses meaning "months". The word "menstruation" comes from Old French menstrual, which comes from Latinmenstrualis, meaning "monthly," especially "of or having monthly courses."

Medilexicon's medical dictionary describes menstruation as the "cyclic endometrial shedding and discharge of a bloody fluid from the uterus during the menstrual cycle of humans and primates".

Answer 2

Menstruation is the monthly shedding of the inner lining of the uterus in females who are not pregnant. It is a natural process that typically lasts about 3-7 days and is controlled by hormones in the body. Menstruation usually starts during puberty and ends at menopause.