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THE MENSTRUAL CYCLE Menstruation (period) EGG RELEASED ON DAY 14 CONTROLLED BY 3 HORMONES 1.OESTROGEN 2.FSH (Follicle Stimulating Hormone) 3.LH (Leutinising Hormone) LH and FSH are secreted by the PITUITARY GLAND in the brain. Firstly, FSH STIMULATES AN EGG IN ONE OVARY TO MATURE. 2. MATURE EGG 1.UNDEVELOPED EGGS 4. REMAINS OF EGG 3.RELEASED EGG OESTROGEN • THE MATURING EGG (FOLLICLE) PRODUCES OESTROGEN. • OESTROGEN THICKENS THE UTERUS LINING FOR POSSIBLE EGG IMPLANTATION. • Complete Menstrual cycle work sheet. Lastly, LH CAUSES AN EGG TO BE RELEASED FROM THE OVARY. 2. MATURE EGG 1.UNDEVELOPED EGGS 4. REMAINS OF EGG 3.RELEASED EGG FSH: Egg Maturation in ovary LH: Egg release (Ovulation) TASKS: Text book pp 24-25 1. Answer Qs 1-4. 2. Make notes about the contraceptive pill and possible risks with taking it. (p25). 3. Answer the ‘Science Skills’ question. 4. Answer Q5. 5. Make notes on Fertility drugs. 6. Answer Q6.