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How are sperm produced in teens?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)

Testosterone is made in the testicles; seminiferous tubules, stimulated by chemical messengers from the brain called luteinizing hormone (LH) and follicle stimulating hormone (FSH). In early puberty, LH tells the tubules to start producing sperm, which then move to the coiled tube at the back of the testicles, the epididymis. There they gain a tail and learn to swim straight. Sperm hang out in the epididymis until you’re ready for shooting (meaning ejaculation) because they are sensitive to heat and thrive in a temperatureseveral degrees lower than the human body. That’s why you were designed with your scrotum hanging outside: to keep your testes cool.

YOU: The Owner's Manual for Teens: A Guide to a Healthy Body and Happy Life

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YOU: The Owner's Manual for Teens: A Guide to a Healthy Body and Happy Life

A few years ago, we wrote YOU: The Owner’s Manual, which taught people about the inner workings of their bodies—and how to keep them running strong. But you know what? There’s a big difference...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.