Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. [1]

Menstruation — aka having your period — is when blood and tissue from your uterus comes out of your vagina. It usually happens once every month.

Sep 4, 2025 · Menstruation is period bleeding, which is casually referred to as “having your period.” This happens monthly (for most females) during your fertile years, except during …

Your menstrual cycle begins on the first day of your period. Your cycle prepares your body for a possible pregnancy. The average cycle lasts between 24 and 38 days.

There is a lot to learn about periods. Here are answers to some common questions. When Do Periods Usually Start? Most girls get their first period when they're around 12. But sometimes …

Feb 29, 2024 · Menstruation (or period) happens monthly. As the uterus sheds its lining, vaginal bleeding follows. Menstrual blood is made of blood and tissue.

It occurs in approximately monthly cycles throughout a woman's reproductive life, except during pregnancy. Menstruation starts during puberty (the first period is called menarche) and stops …

Jan 13, 2025 · A menstrual cycle begins with the first day of your period, or menstruation [MEN-stroo-AY-shuhn] and starts over again when the next period begins. Throughout a monthly …

A period is the part of the menstrual cycle when a woman bleeds from her vagina for a few days. For most women this happens around every 28 days, but it's common for periods to be more …

Apr 21, 2023 · Menstruation, or periods, usually happen once a month during the reproductive years, except during pregnancy. It is when the lining of the uterus sheds, breaking down into …