Glossary of terms used on this site
T
| Term |
Definition |
| Testicles |
Two testicles (glands) in the male reproductive system produce sperm and hormones, including testosterone. Physical problems with the testicles can cause infertility.
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| Testosterone |
A male sex hormone produced in the testicles, testosterone stimulates the production of sperm and controls the development of male sex characteristics.
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