Menstrual cycle

1. Pituitary gland releases FSH

• FSH simulates egg maturation
• FSH releases oestrogen

1. Oestrogen causes growth of uterus lining

• inhibits FSH
• stimulates LH

1. LH released from pituitary gland

• causes ovulation

1. Ovary follicle produces progesterone

• Maintains uterus lining

1. Menstruation

• Progesterone levels drop

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