menstrual cycle
- Created by: frejwhit
- Created on: 05-06-19 18:17
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- Menstrual Cycle
- Key Hormones
- FSH
- released by pituitary gland
- Causes egg in ovary to mature
- stimulated production of oestrogen
- Oestrogen
- Produced in ovaries
- causes development of uterus lining
- inhibits production of FSH
- stimulates production of LH
- LH
- Produced by pituitary gland
- stimulates the release of a mature egg
- Ovulation
- Progesterone
- produced in ovaries after ovulation
- maintains lining of uterus
- when levels drop, uterus lining breaks down
- stops release of LH and FSH
- FSH
- Stages
- stage 1
- days 1-4
- uterus lining breaks down
- Stage 2
- day 4-14
- uterus lining starts to build up agains
- stage 3
- day 14
- ovulation happens
- egg is released from one of the ovaries
- stage 4
- day 15-28
- uterus lining maintained
- ready for arrival of fertilised egg
- lining breaks down if no fertilised egg attaches to lining
- stage 1
- Key Hormones
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