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Created by Rattan Bhorjee
over 9 years ago
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Question | Answer |
Stage 1 (Days 1-4) | Menstruation starts - The Uterus lining breaks down for about 4 days. |
Stage 2 (Days 4-14) | The uterus lining builds up again - into a thick spongy layer full of blood vessels, ready to receive a fertilised egg. |
Stage 3 (Day 14) | An egg develops an is released from the ovary - this is called ovulation. |
Stage 4 (Approx day 14-28) | The wall is then maintained - If no fertilised egg has landed on the uterus wall by day 28, the spongy lining starts to break down and the cycle starts again. |
Hormone 1. FSH (Follicle-Stimulating Hormone) (3) | 1. Produced in the pituitary gland. 2. Causes an egg to develop in one of the ovaries. 3. Stimulates the ovaries to produce oestrogen. |
Hormone 2. Oestrogen (3) | 1. Produced in the ovaries. 2. Causes the lining of the uterus to repair. 3. Stimulates the production of LH and inhibits the production of FSH. |
Hormone 3. LH (Luteinising Hormone) (3) | 1. Produced by the Pituitary gland. 2. Stimulates the release of an egg at day 14 (ovulation). 3. Indirectly stimulates progesterone production. |
Hormone 4. Progesterone (3) | 1. Produced in the ovaries. 2. Maintains the lining of the uterus. When the level of progesterone falls, the lining breaks down. 3. Inhibits the production of LH. |
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