BIOL 1410 Lecture Notes - Lecture 17: Seminiferous Tubule, Tunica Vaginalis, Rete Testis

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1410
• Professor: Paul Messing

Document Summary

Ducts: produce gametes + hormones, transport & store gametes. Accessory glands: produce secretions that support gametes, male reproductive system structures [27. 1][27. 2][27. 3, gonads = testes. Located within the scrotum (skin + ct) Surrounded by 2 tunics: tunica vaginalis. Extends inward to divided testis into lobules. Each lobule contains: [27. 3][27. 9: seminiferous tubules. Tubules unite to form rete testis (rete = network) Walls contain: germ cells in various stages of development, sertoli cells (sustentocytes) Have tight junctions form blood-testis barrier: protects sperm from immune system, toxins, drugs, etc. Produce testicular fluid: for transport in lumen. Respond to follicle stimulating hormone (fsh: leydig cells (interstitial cells) Sperm mature (develop ability to swim: vas (ductus) deferens. Vasectomy = vas deferens cut & tied of. Spermatic cord - contains vas deferens, nerves (ans) veins, artery, lymph vessels, muscle (skeletal) Formed by union of vas deferens + duct from seminal: ejaculatory duct vesicle, urethra.