DESCRIBE THE ROLE OF HORMONES IN THE FEMALE MENSTRUAL CYCLE (20MKS)

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 Describe the role of hormones in the female menstrual cycle   (20mks)

  Follicle stimulating hormone (FSH) – development of Graafian follicle
                                                              - stimulates ovary; to produce oestrogen
 Oestrogen; - repairs the uterine walls; at high levels; stimulates; pituitary gland; to produce
luteinizing hormone; suppresses Follicle stimulating Hormone (FSH)
Luteinizing hormone: - cause ovulation; cause development of corpus luteum from Graafian follicle
                                    - Corpus luteum produces progesterone
Progesterone; - inhibits production of FSH; causes the development / thickening of uterine walls;
maintains pregnancy; inhibits production of oestrogen; suppresses the production of luteinizing hormone from the pituitary gland stops ovulation   

(20mks)

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