Sexual Reproduction

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  • Created by: Paige
  • Created on: 08-06-12 13:27

During sexual reproduction, a male gamete (sperm) fuses with a female gamete (egg). This is called fertilisation.

The Mentrual Cycle

1) The uterus lining breaks down (the woman has her period).

2) The uterus wall is repaired and gradually thickens.

3) And egg is released from one of the ovaries.

4) The uterus lining stays thick in preparation for a fertilised egg.

5) If no fertilised egg is detected, the cycle starts again.

FSH - Stimulates egg to ripen in ovary

OESTROGEN - stimulates uterus lining to thicken and release of LH

LH - causes ovulation, halfway through the menstrual cycle

PROGESTERONE - produced after ovulation to preserve uterus lining

Infertility Treatment

- Fertility drugs - FSH can be injected into a women who doesn't produce enough naturally.

- Artificial insemination - if man has low sperm count or the woman's oviducts are blocked, sperm is…



thank you...this really helped with my biology revision

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