Menses

Definition

Menses is the monthly shedding of the uterine lining (endometrium) that occurs when pregnancy does not take place, resulting in menstrual bleeding. It is a part of the menstrual cycle controlled by hormonal changes in the female body.

Related terms

Menstrual Cycle:

The cyclical process lasting about 28 days on average, during which the female body prepares for pregnancy by building up and then shedding the uterine lining if fertilization does not occur.

Ovulation:

The phase in the menstrual cycle where an ovary releases an egg, making it available for fertilization by sperm.

Endometrium:

The inner lining of the uterus that thickens in preparation for pregnancy and is shed during menstruation if no fertilized egg implants