This deep dive covers Key Reproductive Hormones within Contraception for GCSE Biology. Topic 9: Contraception It is section 1 of 12 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
🔬 Key Reproductive Hormones
| Hormone | Made by | Function |
|---|---|---|
| FSH | Pituitary gland | Causes eggs to mature in ovary; stimulates oestrogen production |
| LH | Pituitary gland | Triggers ovulation (egg release) |
| Oestrogen | Ovaries | Repairs uterus lining; inhibits FSH; stimulates LH surge |
| Progesterone | Ovaries (corpus luteum) | Maintains uterus lining; inhibits FSH and LH |
Practice questions for Contraception
Which hormone triggers the release of an egg from the ovary (ovulation)?
Explain the role of oestrogen in the menstrual cycle.
Quick recall flashcards
What is contraception?
Contraception is any method used to prevent pregnancy by stopping fertilisation or implantation of an egg. Methods can be hormonal, barrier, or other approaches.
How does the contraceptive pill work?
The pill contains synthetic oestrogen and/or progesterone. These keep hormone levels high, which inhibits FSH release from the pituitary — preventing egg maturation and ovulation.