Male Gonad Regulation Axis

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Questions and Answers

In the context of testosterone levels, what does hypogonadism imply?

  • Both defective spermatogenesis and testosterone production (correct)
  • Defective testosterone production only
  • Overproduction of testosterone
  • Defective spermatogenesis only

Which genetic condition is characterized by impaired testosterone production and azoospermia?

  • Down syndrome
  • Klinefelter’s syndrome (correct)
  • Cri du chat syndrome
  • Turner syndrome

What is the percentage of testosterone that is bound to sex hormone-binding globulin (SHBG)?

  • 2-3%
  • 55%
  • 45% (correct)
  • 50%

What is the most common cause of androgen deficiency in men?

<p>Klinefelter’s syndrome (C)</p> Signup and view all the answers

Which condition leads to delayed puberty or hypogonadism with increased gonadotropins?

<p>Hypogonadotropic hypogonadism (B)</p> Signup and view all the answers

What is the hormone synthesized by the hypothalamus in a pulsatile fashion?

<p>Gonadotropin-Releasing Hormone (GnRH) (D)</p> Signup and view all the answers

What is the primary function of LH?

<p>Induce testosterone synthesis in Leydig cells (C)</p> Signup and view all the answers

Impaired pulse generation of GnRH can lead to inadequate production of which hormones?

<p>LH and FSH (B)</p> Signup and view all the answers

Which cells does FSH act on in the male gonad regulation axis?

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

What is primarily responsible for controlling Leydig cell steroidogenesis of testosterone?

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

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