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Home > All Images > 1991 > October > 8 Oct 1991

Images Dated 8th October 1991

Choose from 13 pictures in our Images Dated 8th October 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Artwork of section through human testis Featured 8 Oct 1991 Print

Artwork of section through human testis

Illustration of a section through a single human testis, one of a pair of male sex organs that are the site of production of spermatozoa (spermatogenesis) and androgen, the male sex hormone. The bulk of testes consists of seminiferous tubules, the site of spermatogenesis. These are arranged in testicular lobes that radiate from a central plexus, the rete testis. Spermatozoa pass through the rete testis into the cap-like epididymis via 12 small ductuli efferentes (4 visible here). Sperm mature in the epididymis and are stored in its lower part until passing into the vas deferens (left, entwined with artery & vein) during ejaculation

© JOHN BAVOSI/SCIENCE PHOTO LIBRARY