1. Reproductive Systems
Chapter 28

4. MEIOSIS

6. Testes
Ducts
Accessory glands
Penis

9. 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)

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

11. 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.
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Semen = 2 to 5 ml with 50 to 130 million sperm per ml.

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