Semen is produced in the following way:
- The testicles produce millions of sperm cells.
- The sperm cells ripen and are stored in the epididymides.
- When a man has an ejaculation, the sperm cells are pushed through the sperm ducts.
- The sperm cells are transported to the prostate and seminal vesicles. Fluid is added to the sperm cells. Together the fluid and the sperm cells make up the semen.
- The semen is pushed out of the penis through the urethra.
When is a man fertile?
A man produces semen for the first time during puberty. In general, a boy becomes fertile between the ages of 12 and 15. He can then have children. Even if he is having sexual intercourse for the first time.
A man produces sperm cells his entire life. He can often have children his entire life.