1. Sex Cell Development In Males Sex cells (also called gametes) are produced through the process of meiosis. Gametes are produced in the reproductive organs called gonads.

2. Male gonads are called testes. The gametes produced by males are called sperm. Each sperm cell is built for motion – they are very streamlined and carries little excess weight.

3. This means the sperm has very limited cytoplasm. Although this is good for a cell that needs to move, it also means the sperm cell has very limited energy., and dies within a few days.

4. Sperm is produced in the testes. These are stored in the scrotum which is the sac that houses the testes. This is located outside of the body, because a cooler temperature is required for the production of sperm.

5. The gametes are then stored in the epididymus. The prostate gland and seminal vesicle are glands which produce a thick liquid, rich in sugars, for the sperm to swim in.

6. The combination of sperm cells plus liquid is called semen. During ejaculation, semen travels through the vas deferens and out the urethra.

7. A hormone is a chemical messenger sent by the braid. Hormones are used to trigger many things in the body. In males, the primary sex hormone is testosterone, which stimulates sperm development.

8. Two other hormones are important in sperm development. These are lutenizing hormone, hormone (LH), and follicle stimulating hormone (FSH).

9. Development in male sex cells continues throughout the lifetime. Men over the age of 90 have been known to father children!!!