ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY
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Development and maturation of sperm. The development of sperm occurs in two phases, spermatogenesis and spermiogenesis. Spermatogenesis, the production of male gametes, and spermiogenesis, the subsequent development of the male gamete into a motile spermatozoon, both occur in the seminiferous tubules located in the testes. Sperm cells begin to mature and migrate toward the lumen of the tubule. The spermatids then swim through the lumen to the epididymis where they continue to mature.
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