Testis

1.how many testis are found in a man usually?

There are usually 2 testes in a man.

2. What does a sperm look like?

It looks like an egg-shaped head with a long tail, somewhat like a young tadpole.


圖片參考：http://d21c.com/sandysez/nursing/sperm_2.jpg




3.Which cell is larger , egg cell or sperm cell/

Egg cell is larger than sperm cell.


圖片參考：http://upload.wikimedia.org/wikipedia/commons/8/86/Sperm-egg.jpg

Picture of sperm cell penetrating the egg cell.

4.How does an egg travel towards the uterus from ovary?

Egg travels from the ovary to the uterus via the Fallopian Tube.

The Fallopian tube is also known as the oviducts and uterine tubes.