BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Male reproductive system. Artwork of the male re- productive system, seen as a cross-sectional side view. Sperm for fertilising female eggs are prod- uced in the testis (orange). During ejaculation the sperm pass out of the two testes into the vas deferens tube (green). The sperm are mixed with fluid from the seminal vesicle (green, at upper right). More fluid is added as the mixture passes through the prostate gland (blue, centre left). The mixture passes out through the urethra tube in the penis (lower left). The spongy tissue (dark blue) in the penis fills with blood to hold it erect. Also seen are the urinary bladder (top centre) & anal passage (upper right).
Model release not required. Property release not required.