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20 Cards in this Set
- Front
- Back
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What role do stereocilia play in the epididymis duct?
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Absorb testicular fluid and provide nutrients to the sperm
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What is the crura region?
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the proximal end of the penis
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What muscle anchors the penis to the pubic arch?
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ischiocavernosus muscle
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What do interstitial cells around the seminiferous tubules do?
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produce androgens
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What temperature does the body try to keep the testes at?
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3degrees C below core body temp
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What is seminal vesicle fluid?
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viscous alkaline mixture of fructose, ascorbic acid, coagulating enzyme (vesiculase), and prostaglandins
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What is prostate gland fluid?
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milky, slight acidic mixture of citrate, enzymes, and Prostate Specific Antigen (PSA)
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What role does prostate gland fluid play?
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It helps activate sperm.
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What do the bulbourethral glands produce?
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A thick, clear mucus that neutralizes traces of urine in the urethra, prior to ejaculation
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What do the prostaglandins in semen do?
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1)decrease viscosity of mucus in the cervix
2)stimulate reverse peristalsis in the uteris 3)facilitate movement of sperm through the female reproductive tract |
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Which hormone enhances sperm motility?
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Relaxin
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What is seminalplasmin?
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an antibiotic chemical
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What liquefies coagulated semen once it enters the female's reproductive tract?
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Fibrinolysin
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What volume of semen is ejaculated?
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2-5ml
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How much sperm is ejaculated?
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50-130 million sperm/ml
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What does the PNS sexual arousal reflex promote the release of?
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Nitric oxide
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What does the Nitric oxide released during sexual arousal do?
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It causes erectile tissue to fill with blood
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What allows the penis to remain erect/engorged?
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The expansion of the corpus cavernosa compresses the drainage veins
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What is spermatogenesis?
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The sequence of events that produce sperm in the seminiferous tubules
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How many chromosomes do gametes have?
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23
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