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11 Cards in this Set
- Front
- Back
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Muscles of the ballsac |
Dartos muscle-smooth muscle, wrinkles scrotal skin, pulls scrotum close to the body. Cremaster muscle- bands of skeletal muscle that elevates testes ( has control over these) |
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What keeps the balls cool |
Venous plexus |
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Accessory sex glands |
Seminal gland- 70% Prostate gland - 30% Bulb-urethral gland- pre cum |
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How does sperm leave? |
Epididymis Ductus deferens (vas) Ejaculatory duct Urethra |
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Tunics of the testes |
Two tunics Tunica vaginalis-outter layer derived from peritoneum Tunica albuginea- inner layer, fibrous capsule |
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Septa divides testes |
into 250 lobules, each containing 1-4 seminiferour tubules. Site of sperm production |
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Sperm convoyed from |
1. Seminiferous tubules 2. Straight tubule 3. Rate testis 4. Efferent ductules 5. Epididymis 6. Vas |
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Epididymis |
Worm looking thing. Head contains efferent ductules 6m long Microvilli absorb testicular fluid and pass nutrients to stored sperm. Nonmotile sperm enter, pass slowly through (around 20 day) grow tails and come mobile. Can be stored for several months During ejaculating epididymis contracts pushing sperm up ducts deferens |
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Urethra |
Both urine and semen. 3 regions. PMS Prostatic urethra- surrounded by prostate Membranes urethra- in uregenital diaphragm Spongy urethra- runs through penis. Opens at exernal urethral orifice |
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Seminal gland |
Smooth muscle contracts during ejaculating Viscous alkaline fluid Fructose, citric acid, coagulation enzymes (vasiculase) prostaglandin |
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Prostate |
Milky slightly acidic Citrate, enzymes, prostate specific antigens (PSA) For sperm activation |
