Reproduction

Question 1

1-8 on reproduction

Answer 1

1. During sexual intercourse sperm are released into the female vagina.
2. Sperm swim through the cervix into the uterus and then to the oviducts.
3. The nucleus of one sperm fuses with the nucleus of one egg.
4. The zygote divides to form a ball of cells and is now called an embryo.
5. The embryo travels down the oviduct to the uterus where it implants.
6. The foetus is attached to the placenta by the umbilical cord.
7. After 40 weeks, the muscular wall of the uterus contracts pushing the baby down the birth canal.
8. The baby is born head first and its umbilical cord is cut.

Question 2

How did your life begin with contraception (simpler)

Answer 2

Your life began when the nucleus of your father’s sperm and the nucleus of your mother’s egg fused together. This is called fertilisation and occurred inside your mother’s oviduct.
At this stage you were called a zygote. Then you began to divide into a little ball of identical cells called an embryo. Today, you are much more than just a collection of a few cells. Your body is made up of billions of cells that have all specialized to do particular jobs. You can jump, run, think, listen, taste, talk and lots more. You are amazing!