Human Reproductive System: Sperm Formation
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Questions and Answers

What is the optimum temperature for sperm formation?

  • 40°C
  • 34°C (correct)
  • 30°C
  • 37°C

    • Where does testosterone secretion occur?

  • Seminiferous tubules
  • Ductus deferens
  • Interstitial tissue (correct)
  • Epididymis

    • What is the function of Sertoli cells?

  • Supporting sperm development (correct)
  • Regulating sperm movement
  • Producing testosterone
  • Producing sperm

    • What is a characteristic feature of the vas deferens?

    <p>Thick muscularis</p> Signup and view all the answers

    What is the name of the hormone that triggers testosterone secretion?

    <p>Luteinizing hormone (LH)</p> Signup and view all the answers

    In the prostate gland, the ampullae of the ductus deferens merge with the ducts of the seminal vesicles to form:

    <p>Ejaculatory ducts</p> Signup and view all the answers

    What is the location of the ampulla of the ductus deferens?

    <p>Between the ductus deferens and seminal vesicle</p> Signup and view all the answers

    What is the rate of sperm production in a young adult?

    <p>2 × 10^8 per day</p> Signup and view all the answers

    What is the primary function of fructose in seminal fluid?

    <p>Provide nutrients for sperm motility</p> Signup and view all the answers

    What is the approximate percentage of the ejaculate contributed by the seminal vesicles?

    <p>60-70%</p> Signup and view all the answers

    What is the final stage of spermatogenesis?

    <p>Late spermatid</p> Signup and view all the answers

    What type of epithelial cells line the mucosa of the seminal vesicles?

    <p>Pseudostratified columnar</p> Signup and view all the answers

    What is the purpose of the scrotal sac?

    <p>To maintain a permissive temperature for sperm formation</p> Signup and view all the answers

    Which zone of the prostate gland occupies about 5% of the prostate volume?

    <p>Transition zone</p> Signup and view all the answers

    What is the final phase of sperm production?

    <p>Spermiogenesis</p> Signup and view all the answers

    What is the function of Sertoli cells?

    <p>To nourish and support developing spermatogenic cells</p> Signup and view all the answers

    What is the structure that connects the seminiferous tubules to the rete testis?

    <p>Straight tubules</p> Signup and view all the answers

    What is the length of a spermatozoon's flagellar tail?

    <p>45 um</p> Signup and view all the answers

    What is the function of the midpiece of a spermatozoon?

    <p>Provide energy for motility</p> Signup and view all the answers

    Where do spermatids differentiate into spermatozoa?

    <p>In the epididymis</p> Signup and view all the answers

    What is the function of the blood-testis barrier?

    <p>Protect developing spermatogenic cells</p> Signup and view all the answers

    What is the approximate length of a spermatozoon's head?

    <p>5 um</p> Signup and view all the answers

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