BIOL 208 Lecture Notes - Lecture 15: Endometrium, Cervical Canal, Labia Minora
Document Summary
Made up of many seminiferous tubules - sperm are produced in the walls of the tubules. Cells in the wall of the tubule: Sustentocytes - cells that help the sperm develop. The cells in the spaces between the tubules are called interstitial cells - these secrete testosterone. Spermatogenic cells begin development at the edge of the tubule & develop as they move towards the center of the tubule: penis. Surrounding the urethra & maintaining an opening is the corpus spongiosum - hollow blood- lled sinuses that swell with blood at erection. The two dorsal corpora cavernosa provide the structures for erection. Once the sperm have been produced in the testes they move to the epididymus. 10" long tube - takes about 20 days to get through the tube. Once through the tube the sperm are now able to swim & be ejaculated. From the epididymus the sperm would then enter the ductus deferens. These tubes propel the sperm by peristalsis.
