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Reproductive Systems

Explore the intricate details of the male reproductive system including testicular functions, tubular sequence, accessory glands, and hormone production. Uncover the fascinating journey of sperm production and understand the key roles of Leydig cells and Sertoli cells in spermatogenesis.

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Reproductive Systems

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  1. Reproductive Systems Chapter 28

  2. MEIOSIS

  3. Testes • Ducts • Accessory glands • Penis

  4. Tubular Sequence • Seminiferous tubules • Rete • Epididymis – 20 feet long, 10 to 14 days to travel. • Vas deferens – 18 inches • Ejaculatory duct • Urethra • Total travel time = (64 to 72 days)

  5. Leydig cells produce Testosterone. Sertoli cells (sustentacular) Create blood testes barrier And nourish spermatocytes.

  6. Male Accessory Glands • Seminal vesicles – alkaline fluid with fructose, ascorbic acid and enzymes. • Prostate – secretes citrate, enzymes and PSA. • Bulbourethral (Cowper’s) Gland – neutralizes acids. _______________________________ Semen = 2 to 5 ml with 50 to 130 million sperm per ml.

  7. Hormones: • FSH = follicle stimulating hormone • acts on Sertoli cells • 2. LH = luteinizing hormone that acts on • Leydig cells to secrete testosterone. • 3. Inhibin

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