Describe the role of hormones in the menstrual cycle. In your answer, refer to FSH, LH and oestrogen.

WJEC A-Level Biology (Wales) — 4.1 Reproductive biology · Describe · 5 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (5 marks)

1. FSH is released by the pituitary gland.
2. FSH stimulates the maturation of an egg in the ovary.
3. Oestrogen is produced by the ovaries and regulates the female reproductive system.
4. LH is released by the pituitary gland and triggers ovulation, the release of an egg.
5. Hormones travel in the blood to reach their target organs.

Examiner tips

Use the exact terms FSH, LH, oestrogen and the pituitary gland. Show the sequence: pituitary → FSH/LH → ovary → egg maturation/ovulation. Mention that hormones act via the bloodstream.

Common mistakes

Confusing FSH with LH or vice‑versa. Forgetting that oestrogen is produced by the ovaries. Omitting the role of the bloodstream as the transport medium.

Mark scheme (5 marks)

FSH is released by the pituitary gland
FSH causes maturation of an egg (in the ovary)
Oestrogen is produced by the ovaries / regulates the female reproductive system
LH is released by the pituitary gland and stimulates the release of an egg (ovulation)
Hormones travel in the blood(stream) to target organs

Key terms in this question

FSH · LH · oestrogen