KINE 1P90 Lecture Notes - Lecture 7: Seminiferous Tubule, Ejaculatory Duct, Vas Deferens
17 Oct 2017
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What do they do: produce gametes (gametogenesis, sperm (male) or ova (female. What does it do: a system of ducts that are specialized to transport or house thet gametes after they are produced. In the abdomen during development, and decesnd into scrotum during the 7th month of gestation: the lower temperature helps srem production. The reproductive tract: epididymis (x2, vas deferens (x2, ejaculatory duct (x2, urethra. The accessory glands: secrete fluid (semen) into the reproductive tract, seminal valves, prostate glands, bulbourethral gland. If body temperature increases, the muscle relaxes: dartos muscle. The testis contain: seminiferous tubules, 80% of testicular mass, produce sperm (spermatogenesis, leydig cells. In the connective tissue between the seminiferous tubules: produce testosterone. Testosterone: once produced, some is secreted into the blood where it is transported (bound to plasma proteins) to site of action, some goes into the lumen of the seminiferous tubules where it helps to produce sperm.
