The document outlines the stages of pregnancy from fertilization to birth. It describes how sperm fertilizes an egg in the fallopian tubes to form a zygote. The zygote then implants in the uterus and develops over weeks and months with the placenta, umbilical cord, amniotic sac, and amniotic fluid providing support. The final stage of labor will be covered in the next lesson.

1. Stages of pregnancy 1P9: Thursday 9 th December

2. Sperm are deposited into the vagina and travel up the uterus to the oviduct (200-300 million sperm are present) Following fertilisation the sperm and egg are known as a ZYGOTE

3. Uterus Oviduct An egg is released from the ovary

4. 3 Weeks

5. 4 Weeks

6. 6 Weeks

7. 6 Weeks

8. 8 Weeks

9. 9 Weeks

10. 12 Weeks

11. 16 Weeks

12. 20 Weeks

13. 24 Weeks

14. 30 Weeks

16. Organ Function Placenta Umbilical cord Amniotic Sac Amniotic Fluid Provides nutrients to the developing embryo Transports nutrients and oxygen from mother to baby and waste back. It is attached to mother and baby Contains the Amniotic Fluid Fluid in the amniotic sac that cushions the baby from bumps

17. Next lesson we are going to look at what happens when the baby is ready to be born, this is known as LABOUR