Spermatogenesis and Fertilization Process
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Questions and Answers

What is the role of the hypothalamus in the regulation of the menstrual cycle?

  • Secretes FSH and LH
  • Releases gonadotropin-releasing hormone (GnRH) (correct)
  • Triggers ovulation
  • Stimulates the development of primordial follicles
  • During which process are male gametes formed?

  • Fertilization
  • Oogenesis
  • Gametogenesis
  • Spermatogenesis (correct)
  • What is the number of oocytes present in the ovary at puberty?

  • ~2 million
  • ~200
  • ~40,000 (correct)
  • ~400
  • Which phase of meiosis are primary oocytes arrested in at the time of birth?

    <p>Prophase I</p> Signup and view all the answers

    What triggers the rupture of the mature follicle and release of the oocyte during ovulation?

    <p>Spike in Estradiol concentration</p> Signup and view all the answers

    Which hormone stimulates Leydig cells in the testis to produce testosterone?

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

    At what stage does the process of spermiogenesis occur?

    <p>During the formation of round spermatids</p> Signup and view all the answers

    Where does fertilization typically occur?

    <p>In the fallopian tubes</p> Signup and view all the answers

    What is the main role of fimbriae in the fallopian tube during ovulation?

    <p>Grasping the ovum and transporting it into the tube</p> Signup and view all the answers

    What occurs during spermatogenesis?

    <p>Formation of sperm cells</p> Signup and view all the answers

    How is the sex of a new individual determined at fertilization?

    <p>By the combination of chromosomes from both parents</p> Signup and view all the answers

    What is the significance of restoration of the diploid number of chromosomes after fertilization?

    <p>Results in a new combination of chromosomes different from both parents</p> Signup and view all the answers

    What stimulates and controls cyclic changes in the ovary?

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

    During ovulation, what covers the secondary oocyte arrested in metaphase of meiosis 2?

    <p>Zona pelucida</p> Signup and view all the answers

    Which hormone produced by the hypothalamus acts on cells of the anterior pituitary gland to regulate gonadotropin secretion?

    <p>Gonadotropin-releasing hormone (GnRH)</p> Signup and view all the answers

    What process does the primary oocyte undergo 3 hours before ovulation?

    <p>Meiosis 1</p> Signup and view all the answers

    What is released into the peritoneal cavity during ovulation?

    <p>Cumulus oophorus</p> Signup and view all the answers

    Which hormone is most directly responsible for inducing the secretory changes in the endometrium to prepare for embryo implantation?

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

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