Search results
Results from the WOW.Com Content Network
Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle 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. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...
Mammals that have menstrual cycles shed the endometrium through menstruation instead. Humans, elephant shrews , and a few other species have menstrual cycles rather than estrous cycles. Humans, unlike most other species, have concealed ovulation , a lack of obvious external signs to signal estral receptivity at ovulation (i.e., the ability to ...
The period before menstruation, known as the premenstrual phase, is often linked to emotional distress.Conditions related to the menstrual cycle encompass premenstrual tension syndrome, premenstrual dysphoric disorder, and the exacerbation of another medical condition during the premenstrual phase.
Jacobson explains, “During the first two years of menarche (the age of a woman’s first menstrual period), the positive feedback response to estrogen, which allows ovulation, can cause ...
Sofia Lira listens to pediatrician Dr. Rodrigo De La Cruz's instructions during a checkup on the baby at the Altura Centers for Health clinic in West Tulare on Sept. 7, 2023.
Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...
Menarche (/ m ə ˈ n ɑːr k i / mə-NAR-kee; from Ancient Greek μήν (mēn) 'month' and ἀρχή (arkhē) 'beginning') is the first menstrual cycle, or first menstrual bleeding, in female humans. From both social and medical perspectives, it is often considered the central event of female puberty, as it signals the possibility of fertility.
Dysmenorrhea, also known as period pain, painful periods or menstrual cramps, is pain during menstruation. [ 4 ] [ 5 ] [ 2 ] Its usual onset occurs around the time that menstruation begins. [ 1 ] Symptoms typically last less than three days. [ 1 ]