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Spermatozoa

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Spermatozoa (sperm) are the male sex cells that carry a man's genetic material. Pregnancy occurs when a sperm penetrates a woman's egg (ovum).

Sperm develop in a man's testicles and finish maturing in the epididymides. During ejaculation, the sperm move out of the epididymides through the vas deferens and into the urethra, the tube that runs through the penis. Semen, the thick liquid produced in the seminal vesicles and prostate gland, is added to the sperm before ejaculation.

Primary Medical Reviewer Martin Gabica, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Specialist Medical Reviewer Christopher G. Wood, MD, FACS
- Urology/Oncology
Last Updated February 5, 2007

WebMD Medical Reference from Healthwise

Last Updated: February 05, 2007
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