Male Reproductive System and Sperm Production Quiz

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Questions and Answers

Where are the sites of sperm production in the male?

  • Seminal vesicle
  • Ductus deferens
  • Paired testes (correct)
  • Epididymis

What is the function of the scrotum in the male reproductive system?

  • Stores sperm
  • Regulates the temperature of the developing sperm (correct)
  • Produces testosterone
  • Facilitates urine excretion

What is the purpose of the epididymis in the male reproductive system?

  • Sperm maturation and storage (correct)
  • Hormone secretion
  • Nutrient absorption
  • Sperm production

What is the function of the ductus (vas) deferens in the male reproductive system?

<p>Transport sperm from the epididymis to the ejaculatory duct (A)</p> Signup and view all the answers

What is the role of the seminal vesicle in the male reproductive system?

<p>Produce fluid that nourishes and helps sperm move (A)</p> Signup and view all the answers

What is the purpose of the ejaculatory duct in the male reproductive system?

<p>Passage for sperm and seminal fluid to mix before ejaculation (C)</p> Signup and view all the answers

What is the function of the seminiferous tubules in the testes?

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

What happens when the temperature within the scrotum falls below a certain point?

<p>The smooth muscle of the scrotum contracts, bringing the testes closer to the warmth of the body (B)</p> Signup and view all the answers

What is the length of each testis in the male reproductive system?

<p>About 2 inches (C)</p> Signup and view all the answers

What is the purpose of the smooth muscle in the scrotum?

<p>Regulates the position of the testes based on temperature (B)</p> Signup and view all the answers

What is the role of the testes in the male reproductive system?

<p>Sperm production and hormone secretion (D)</p> Signup and view all the answers

What is the function of the scrotum in relation to the temperature of the developing sperm?

<p>Regulates the temperature by contracting and relaxing (C)</p> Signup and view all the answers

Where does the process of sperm production occur?

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

What is the function of the epididymis in sperm development?

<p>Developing the ability to swim (C)</p> Signup and view all the answers

What is the main function of the penis in the male reproductive system?

<p>Delivering sperm internally to the female (D)</p> Signup and view all the answers

What is contained in semen?

<p>Fructose and prostaglandins (B)</p> Signup and view all the answers

What stimulates undifferentiated spermatogonia and Sertoli cells in the male reproductive system?

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

What is the role of Sertoli cells in the male reproductive system?

<p>Supporting the maturation of spermatids (A)</p> Signup and view all the answers

What is the composition of a mature sperm?

<p>Head with DNA, acrosome, and flagellum (C)</p> Signup and view all the answers

What controls male reproductive tissues, behavior, and secondary sexual characteristics?

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

What is the main role of testosterone in the male reproductive system?

<p>Stimulating undifferentiated spermatogonia and Sertoli cells (D)</p> Signup and view all the answers

What controls the production and secretion of testosterone in the male reproductive system?

<p>Gonadotropin-releasing hormone, luteinizing hormone, and follicle-stimulating hormone (D)</p> Signup and view all the answers

What maintains a consistent blood concentration of testosterone and sperm production in the male reproductive system?

<p>Negative feedback loops (B)</p> Signup and view all the answers

How many sperm are typically produced daily after puberty?

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

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Study Notes

Male Reproductive System and Sperm Production

  • Sperm are not fully mature upon leaving the seminiferous tubules; their ability to swim develops in the epididymis and ductus deferens.
  • The penis is the male organ of sexual intercourse, delivering sperm internally to the female and containing erectile tissues for erection.
  • Semen, a mixture of fluids, contains fructose and prostaglandins from the seminal vesicles, an alkaline fluid from the prostate gland, and mucus from the bulbourethral gland.
  • The process of sperm production occurs in the seminiferous tubules, involving mitosis and meiosis to produce haploid cells.
  • Spermatogonia, diploid cells with 46 chromosomes, divide by mitosis to ensure a constant supply of primary spermatocytes.
  • Spermatids, haploid cells, mature slowly to become sperm, a process taking about 9-10 weeks and supported by Sertoli cells in the seminiferous tubules.
  • A mature sperm has a head with DNA, an acrosome containing penetration enzymes, and a flagellum powered by mitochondria.
  • Tens of millions of sperm are produced daily after puberty, and a typical ejaculation may contain 100-300 million sperm.
  • Testosterone, produced by interstitial cells, controls male reproductive tissues, behavior, and secondary sexual characteristics, stimulating undifferentiated spermatogonia and Sertoli cells.
  • The production and secretion of testosterone depend on gonadotropin-releasing hormone (GnRH), luteinizing hormone (LH), and follicle-stimulating hormone (FSH).
  • Negative feedback loops maintain a consistent blood concentration of testosterone and sperm production.

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