Biology 9.1-9.2   Chapter on Reproductive Systems
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Questions and Answers

What is the diploid cell formed from the union of male and female gametes called?

  • Oocyte
  • Zygote (correct)
  • Sperm
  • Gamete
  • Which hormone is primarily responsible for male reproductive system regulation?

  • Progesterone
  • Estrogen
  • Oxytocin
  • Testosterone (correct)
  • What does the process of spermatogenesis produce?

  • Oocytes
  • Embryos
  • Zygotes
  • Sperm (correct)
  • How do sex differences affect an individual's health?

    <p>By influencing disease susceptibility and treatment responses</p> Signup and view all the answers

    Which of the following are haploid gametes produced in the male reproductive system?

    <p>Sperm and Oocytes</p> Signup and view all the answers

    What role do female reproductive systems play in reproduction?

    <p>Providing a supportive environment for fertilization and pregnancy</p> Signup and view all the answers

    What is a common outcome of individuals unable to respond to androgenic hormones?

    <p>Development of both male and female sex traits</p> Signup and view all the answers

    Which of the following accurately describes gametes in the context of sexual reproduction?

    <p>Haploid cells generated through meiosis</p> Signup and view all the answers

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

    <p>Production of sex hormones and spermatogenesis</p> Signup and view all the answers

    What role does the scrotum play in the male reproductive system?

    <p>Maintains temperature for spermatogenesis</p> Signup and view all the answers

    Where does sperm maturation occur in the male reproductive system?

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

    What do the seminal glands produce?

    <p>Seminal fluid containing energy-providing chemicals</p> Signup and view all the answers

    What is the function of the prostate gland in the male reproductive system?

    <p>To prevent coagulation of sperm in the vagina</p> Signup and view all the answers

    What fluid is a combination of sperm and seminal fluid known as?

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

    What is the primary function of the bulbourethral (Cowper's) glands?

    <p>Secretion of lubricating alkaline mucus</p> Signup and view all the answers

    Which structure serves both reproductive and excretory functions in males?

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

    What type of cells are formed from a primary spermatocyte during meiosis I?

    <p>Secondary spermatocytes</p> Signup and view all the answers

    How many haploid early spermatids are produced after meiosis II?

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

    What transformation occurs to early spermatids during maturation?

    <p>They become motile spermatozoa</p> Signup and view all the answers

    Where do spermatozoa gain motility?

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

    What is the function of enzymes found in the acrosome of a spermatozoon?

    <p>To penetrate the zona pellucida</p> Signup and view all the answers

    What causes the removal of excess cytoplasm during the maturation of sperm cells?

    <p>Cell differentiation</p> Signup and view all the answers

    When does spermatogenesis begin in males?

    <p>During puberty</p> Signup and view all the answers

    How long does the entire process of spermatogenesis take in humans?

    <p>64-75 days</p> Signup and view all the answers

    What role does luteinizing hormone (LH) play in the male reproductive system?

    <p>Stimulates testosterone production in Leydig cells</p> Signup and view all the answers

    How does high testosterone levels affect the hypothalamus and anterior pituitary gland?

    <p>They inhibit GnRH and gonadotropin secretion</p> Signup and view all the answers

    What is the role of follicle-stimulating hormone (FSH) in spermatogenesis?

    <p>Promotes Sertoli cell function</p> Signup and view all the answers

    How does inhibin regulate the male reproductive system?

    <p>Inhibits FSH secretion from the anterior pituitary</p> Signup and view all the answers

    What happens if testosterone levels fall too low in the male HPG axis?

    <p>GnRH is released again to stimulate LH and FSH secretion</p> Signup and view all the answers

    What is the main function of the mitochondria in the midpiece of a spermatozoon?

    <p>To produce ATP for motility</p> Signup and view all the answers

    Which structures are derived from the Wolffian ducts in male development?

    <p>Vas deferens and seminal vesicles</p> Signup and view all the answers

    What hormone is secreted by developing Sertoli cells to repress female reproductive structure development?

    <p>Anti-Müllerian hormone (AMH)</p> Signup and view all the answers

    Which part of sperm is responsible for motility?

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

    During which life stage are sex hormone levels typically low?

    <p>Infancy and childhood</p> Signup and view all the answers

    How is male reproductive development primarily regulated during puberty?

    <p>By the hypothalamic-pituitary-gonadal (HPG) axis</p> Signup and view all the answers

    What initiates the cascade of events leading to male reproductive organ development in an XY individual?

    <p>Expression of SRY and related genes</p> Signup and view all the answers

    What anchors the centrioles in the midpiece of a spermatozoon?

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

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