Notes on Male Reproductive System - Human Gross Anatomy | BMS 301, Study notes of Biology

Download Notes on Male Reproductive System - Human Gross Anatomy | BMS 301 and more Study notes Biology in PDF only on Docsity! 3 October Descent of Testes Kidneys ascend, testes descend during fetal growth Differential growth rate (body continues growing, UG system does not) Gubernaculum is connective tissue attached from testicle (or ovary) to anterior abdominal wall Passes through inguinal canal Attaches to what will become scrotum in adult Layers of abdominal wall surround testes in adult Muscle fibers from internal abdominal oblique exist – cremaster muscle Controls testes height for temperature control Testis may get stuck in inguinal canal If it remains to age 4 – 6 ish → surgery Testis remains in abdomen, does not reach inguinal canal Cryptorchid testis – no viable sperm Spermatic cord After emergence from superficial inguinal ring – uses this name Contains ductus deferens, testicular artery and vein, genitofemoral (or testicular) nerve, lymphatic vessels Pampiniform plexus regulates temperature for viable sperm production Testes Sperm production Produces testosterone Epididymis Upon reaching tail, is single tube Head rests on testis top Tail becomes ductus deferens Sperm storage, become viable Vasectomy Ligation of ductus deferens Sterilization Reversible 50% no viable sperm (body will develop antibodies) Urethra runs through body of prostate gland Benign prostate hypertrophy (BPH) Enlarge prostate Squeezes/clamps down on urethra Prostate Produces 20% of seminal fluid/ejaculate Includes fructose, prostaglandins Fructose – energy source for sperm Prostaglandins – induce uterus contraction PSA (prostate specific antigen level) Elevated – something’s wrong Test more often