THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Menstruation is one part of a person’s menstrual cycle which includes the shedding of the endometrium (lining of the uterus) that occurs throughout a person’s reproductive life.

Detailed explanation-2: -Menstruation is the monthly shedding of the lining of your uterus. Menstruation is also known by the terms menses, menstrual period, menstrual cycle or period.

Detailed explanation-3: -During a typical menstrual cycle, the inside walls of the uterus grow a soft tissue lining called the endometrium. If you do not get pregnant, the endometrium is shed during menstruation.

Detailed explanation-4: -The lining of the uterus (endometrium) starts to thicken. One of the ovaries releases an egg. And then, if the egg isn’t fertilized or a fertilized egg doesn’t attach to the lining of the uterus (implant), the endometrium sheds from the uterus as a menstrual period.