BSIP, JACOPIN / SCIENCE ET V / SCIENCE PHOTO LIBRARY BSIP, JACOPIN / SCIENCE ET V / SCIENCE PHOTO LIBRARY
Spermatogenesis. Artwork showing the position and anatomy of male reproductive organs involved in the production of sperm (spermatogenesis). Each testis (top left and centre right, yellow, and centre left, in cross-section) contains seminiferous tubules (pink). An enlargement of one tubule (lower right) shows the sertoli cells (green) which support and feed the growing spermatozoa (sperm cells, bottom centre). Germ cells in each tubule develop into spermatocytes, which divide to become spermatids. The spermatids later mature into spermatozoa and move to the epididymis where they are stored.
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