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  4. Correct sequence of hormone secretion from beginning of menstruation is :

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Q. Correct sequence of hormone secretion from beginning of menstruation is :

Haryana PMTHaryana PMT 2002

Solution:

Before the start of the Menstrual cycle, The estrogen and progesterone levels are low. Low levels of estrogen and progesterone signal the pituitary gland to produce Follicle Stimulating Hormone (FSH). FSH begins the process of maturing. The follicle produces more estrogen. Increased estrogen levels trigger a sharp rise in Luteinizing Hormone (LH) from the pituitary gland, causing release of the egg from the follicle. The ruptured follicle called the corpus luteum now secretes more progesterone and estrogen to continue to prepare the uterus for pregnancy. If the egg is not fertilized, estrogen and progesterone levels drop and the menses begin