Process of the Menstrual Cycle
The menstrual cycle happens about every 4 weeks. It starts with the pituitary gland secreting a hormone called progesterone which simulates a follicle to that releases estrogen. As the hormones increase , the follicle matures and the the lining of the uterus thickens. The FHS then stimulates the follicle to release even more hormones called LH which makes the uterus lining thicken more. Over the next 6 1/2 days, the mature egg travels down the fallopian tube toward the uterus. If the egg is not fertilized during its time in the uterus, then the uterus begins to shed its lining. Prostaglandins cause the muscles of the uterus to contract, pushing the lining out of the body as menstruation fluid.
The menstrual cycle happens about every 4 weeks. It starts with the pituitary gland secreting a hormone called progesterone which simulates a follicle to that releases estrogen. As the hormones increase , the follicle matures and the the lining of the uterus thickens. The FHS then stimulates the follicle to release even more hormones called LH which makes the uterus lining thicken more. Over the next 6 1/2 days, the mature egg travels down the fallopian tube toward the uterus. If the egg is not fertilized during its time in the uterus, then the uterus begins to shed its lining. Prostaglandins cause the muscles of the uterus to contract, pushing the lining out of the body as menstruation fluid.