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 (C)</p> Signup and view all the answers

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

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

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

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

What is the primary function of fructose in seminal fluid?

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

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

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

What is the final stage of spermatogenesis?

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

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

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

What is the purpose of the scrotal sac?

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

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

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

What is the final phase of sperm production?

<p>Spermiogenesis (A)</p> Signup and view all the answers

What is the function of Sertoli cells?

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

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

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

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

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

What is the function of the midpiece of a spermatozoon?

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

Where do spermatids differentiate into spermatozoa?

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

What is the function of the blood-testis barrier?

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

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

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

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