Estrogen.
The hormone secreted by the ovaries that encourages the rebuild of the uterine lining is estrogen. This hormone plays a crucial role in the menstrual cycle, stimulating the thickening of the uterine lining in preparation for potential implantation of a fertilized egg.
A common reason why a woman may experience the loss of the uterine lining is due to low hormone levels. Estrogen and progesterone help facilitate a thickening of the uterine lining in a normal menstrual cycle.
The lining of the uterine cavity is called the "endometrium." It consists of the functional endometrium and the basal endometrium. Shedding of the functional endometrial lining in humans is responsible for menstrual bleeding
The lining of the uterine cavity is called the "endometrium". It consists of the functional endometrium and the basal endometrium. Shedding of the functional endometrial lining in humans is responsible for menstrual bleeding.
Backache is part of menstrual cramping. The hormones responsible for the uterine contractions can also effect muscles elsewhere in your body, pain from menstrual cramps can also radiate. If you get menstrual cramps then know that they are preventable, don't just suffer them.
It's not exactly normal to suffer diarrhea during menstruation, but it can be common. The hormone-like chemicals responsible for causing uterine contractions to push out menstrual flow can also impact the bowels so cause them to misbehave in this way.
The uterine lining begins to breakdown when the egg of a female is not fertilized by the sperm of a male. This occurs on day one of the menstrual cycle.
Oxytocin is the hormone that is responsible for uterine contractions. This is important during labor, and sometimes the doctor will prescribe an artificial version to give to the expectant mother to start the labor process.
The reason that your back hurts right before your period is simply menstrual cramps. The hormone responsible for causing uterine contractions can effect other muscles within your body, and the pain of menstrual cramps can circulate to be felt througout your lower abdomen including your back, and even in your theighs. Menstrual cramps are common but not normal, most women can prevent cramps with simple dietary changes or herbal treatments to regulate hormones, don't just tolerate menstrual cramps.
Progesterone and estrogen
Menstrual flow consists mainly of uterine cells, uterine tissue and blood. Menstrual flow will also contain vaginal discharge, cervical mucus, and vaginal skin cells that are carried along by the menstrual flow as it passes through the vaginal canal.
The most effective form of painkillers for menstrual cramps are Non-Steroidal Anti-Inflammatory Drugs such as Ibuprofen. NSAID's work by reducing inflammation which can occur in the muscles as a result of prostaglandins (responsible for uterine contractions) and reduce the production of prostaglandins to prevent inflammation and the stronger uterine contractions that cause cramps.