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How is sperm produced?

Sperm (semen) is produced like this:

• Many millions of sperms (sperm cells) are constantly produced in the testicles (1).
• The sperm accumulates in the epididymides (2) and seminal ducts (3).
• The sperm is carried through the seminal ducts (3) to the seminal vesicles (4) and the prostate (5). There it mixes with various fluids to form semen.
• If a man has an orgasm, the semen is propelled through the urethra (6) and out of the penis. This is called ejaculation.

When is a man fertile?

TSemen is produced for the first time during puberty. Most boys become fertile between 12 and 15 years of age. They can then father a child – even the first time they have sex.

Many men can produce sperm throughout their lives. However, their fertility declines as they get older.

¿Cómo se produce el semen?

El semen (líquido seminal) se produce de este modo:

• En los testículos (1) se producen constantemente muchos millones de espermatozoides.
• Los espermatozoides se almacenan en los epidídimos (2) y en las vesículas seminales (3).
• Los espermatozoides se transportan a las vesículas seminales (4) y a la próstata (5) a través de los conductos espermáticos (3). Allí se mezclan con diversos líquidos para formar los espermatozoides.
• Cuando un hombre tiene un orgasmo, el semen sale por la uretra (6) del pene. Esto se llama eyaculación.