Describe hormonal control in various phases of menstrual?
Question: Describe hormonal control in various phases of menstrual?
The menstrual cycle is a recurring process that prepares the female body for pregnancy. It is regulated by four hormones: follicle-stimulating hormone (FSH). luteinizing hormone (LH), estrogen and progesterone. The cycle has three phases: the follicular phase, the ovulation phase and the luteal phase.
In the follicular phase, FSH stimulates the growth of a follicle in the ovary that contains an egg. The follicle produces estrogen, which causes the lining of the uterus (endometrium) to thicken and become more vascular. Estrogen also triggers a surge of LH, which leads to ovulation.
In the ovulation phase, LH causes the follicle to rupture and release the egg into the fallopian tube. The egg travels towards the uterus, where it can be fertilized by a sperm.
In the luteal phase, the ruptured follicle becomes a structure called the corpus luteum, which secretes progesterone. Progesterone maintains the endometrium and inhibits FSH and LH production. If fertilization does not occur, the corpus luteum degenerates and progesterone levels drop. This causes the endometrium to shed, resulting in menstruation.
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