GCSE Biology- Menstrual Cycle 0.0 / 5 ? BiologyHomeostasisGCSEAQA Created by: JesswardopCreated on: 24-02-20 17:25 What hormone is produced by the testes? Testosterone. 1 of 13 What hormone is produced by the ovaries? Oestrogen. 2 of 13 How often is an egg released? Every 28 days. 3 of 13 What does FSH do? It causes the egg to mature in the ovary. 4 of 13 What does LH do? Causes ovulation. 5 of 13 What happens in the first stage of the menstrual cycle? FSH is released by the pituitary gland. 6 of 13 Where does FSH travel? In the blood to the ovaries where it causes the egg to mature. 7 of 13 What does FSH trigger the ovaries to do? Make oestrogen. 8 of 13 What does oestrogen cause? The lining of the uterus to become thick. It also stops the pituitary gland from releasing any more FSH. 9 of 13 What does the pituitary gland now release? LH. 10 of 13 What hormone is released once the ovary has released its egg? Progesterone. 11 of 13 What Progesterone do? Keeps the lining of the uterus thick incase a fertilised egg implants. 12 of 13 What happens if fertilisation does not occur? The level of progesterone falls and the uterus lining and egg are now released. 13 of 13
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