Menstrual cycle

• cyclic process of building the lining of the uterus and ovulation
• follicle stimulating hormone (fsh)


  produced in pituitary gland causing an egg to develop in ovaries, this stimulates the release of oestrogen
• oestrogen 


  produced in ovaries, this builds up and thickens the uterus lining, stimulates LH and slows down FSH
• luteinising hormone (LH)


  produced in pituitary gland, causing ovulation (around 14 days), stimulates progesterone
• progesterone


  produced in ovaries, maintains uterus lining, slows down release of LH