L26 - male
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Questions and Answers

What is the result of a deficiency in 5α-reductase in a male?

  • Female internal genitalia development
  • Mistaken female external genitalia (correct)
  • Male internal genitalia development
  • Abnormal development of external genitalia

    • What is the primary role of Sertoli cells in the testes?

  • Storing testosterone
  • Regulating FSH receptors
  • Supporting germinal cells (correct)
  • Producing sperm cells

    • What is the primary function of the epididymis in males?

  • Producing sperm cells
  • Maturing sperm cells (correct)
  • Regulating FSH receptors
  • Storing testosterone

    • Which of the following is NOT a part of the female internal genitalia?

    <p>Seminal vesicle</p> Signup and view all the answers

    What is the role of the SRY gene in sex determination?

    <p>Determining male sex</p> Signup and view all the answers

    In which weeks of fetal development do the external genitalia form?

    <p>9-12 weeks</p> Signup and view all the answers

    What is the result of the absence of testosterone and AMH in females?

    <p>Female internal genitalia development</p> Signup and view all the answers

    What is the function of the 5a-reductase enzyme?

    <p>Converting testosterone to 5a-dihydrotestosterone</p> Signup and view all the answers

    What is the primary function of Sertoli cells in male fetal development?

    <p>Secreting anti-mullerian hormone</p> Signup and view all the answers

    What is the name of the gene responsible for the development of testes in male fetuses?

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

    What is the name of the hormone secreted by Leydig cells that leads to the growth and development of the Wolffian duct?

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

    At what gestational age do testes develop in male fetuses?

    <p>Between 6-8 weeks</p> Signup and view all the answers

    What is the function of the Wolffian duct in male fetuses?

    <p>Growth and development of the male reproductive system</p> Signup and view all the answers

    What is the primary function of the mullerian duct in female fetuses?

    <p>Growth and development of the female reproductive system</p> Signup and view all the answers

    What is the name of the hormone secreted by Sertoli cells that leads to the regression of the mullerian duct?

    <p>Anti-mullerian hormone</p> Signup and view all the answers

    At what gestational age do both ducts exist in both sexes?

    <p>Before 6 weeks</p> Signup and view all the answers

    What is the primary function of the epididymis in the male reproductive system?

    <p>To store and mature sperm</p> Signup and view all the answers

    What is the average duration of the spermatogenesis process?

    <p>74 days</p> Signup and view all the answers

    Which hormone stimulates the production of testosterone in Leydig cells?

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

    What is the function of the acrosome in the sperm?

    <p>To penetrate the egg during fertilization</p> Signup and view all the answers

    What is the number of sperm produced daily in a healthy male?

    <p>120 million/day</p> Signup and view all the answers

    What is the process by which spermatids transform into mature sperm?

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

    Which cells are responsible for eliminating excess cytoplasm during spermiogenesis?

    <p>Sertoli cells</p> Signup and view all the answers

    What is the age at which spermatogenesis typically begins in males?

    <p>13 years</p> Signup and view all the answers

    Where do spermatozoa initially release into after completing spermatogenesis?

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

    What is the primary function of seminal vesicles?

    <p>To provide nutrients for sperm</p> Signup and view all the answers

    What is the percentage of semen contributed by the prostate gland?

    <p>30%</p> Signup and view all the answers

    What is the term for the enlargement of the prostate gland?

    <p>Prostatic hypertrophy</p> Signup and view all the answers

    What is the function of prostaglandins in seminal vesicle secretion?

    <p>To stimulate smooth muscle contraction</p> Signup and view all the answers

    What is the term for the fluid that is carried by the ejaculatory duct to the urethra?

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

    Where do sperm become mature and gain motility?

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

    What is the term for the axis that regulates male sex hormone secretion?

    <p>Hypothalamicpituitary-testes axis</p> Signup and view all the answers

    What is the effect of anabolic steroids on the testes?

    <p>Testicular atrophy</p> Signup and view all the answers

    What is the function of the bulbourethral glands?

    <p>To clear the urethra from urine residues</p> Signup and view all the answers

    What percentage of semen is composed of sperm?

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

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