Oogenesis and Gametogenesis
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Questions and Answers

What is the main process of formation of haploid gametes from primordial germ cells?

  • Mitosis
  • Meiosis
  • Gametogenesis (correct)
  • Oogenesis
  • What is the term for the primordial cells that give rise to gametes?

  • Primordial germ cells (correct)
  • Spermatozoa
  • Epithelial cells
  • Oogonia
  • Where do primordial germ cells differentiate into oogonia during prenatal development?

  • Uterus
  • Ovary (correct)
  • Testes
  • Epididymis
  • At what stage of development do oogonia undergo mitotic division and enlarge to form primary oocytes?

    <p>During the fifth month of intrauterine life</p> Signup and view all the answers

    What is the term for the unit consisting of a primary oocyte surrounded by flat epithelial cells?

    <p>Primordial follicle</p> Signup and view all the answers

    What is the period of time during which oogenesis occurs?

    <p>Before birth to menopause</p> Signup and view all the answers

    What is the primary reason for primary oocyte arrest at diplotene stage of prophase I of meiotic cell division?

    <p>Due to OMI secreted by follicular cells</p> Signup and view all the answers

    What is the term for the degeneration of many oogonia as well as primary oocyte, except in the cortical region?

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

    What type of epithelium is formed from the granulosa cells?

    <p>Stratified epithelium</p> Signup and view all the answers

    What is the layer surrounding the follicle that divides into an outer fibrous layer and an inner secretory cell layer?

    <p>Theca folliculi</p> Signup and view all the answers

    How many primordial follicles start to mature in each month from each ovary after menarchy?

    <p>15-20</p> Signup and view all the answers

    What is the term given to the follicle when the fluid-filled spaces between the granulosa cells merge to form a single cavity?

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

    What is the fate of the follicles that do not enter the tertiary stage?

    <p>They undergo atresia</p> Signup and view all the answers

    In which stage of meiosis does the secondary oocyte arrest before ovulation?

    <p>Metaphase II</p> Signup and view all the answers

    What is the structure formed by the follicular cells surrounding the antrum?

    <p>Membrana granulosa</p> Signup and view all the answers

    What is the result of the completion of meiosis II in the absence of fertilization?

    <p>The degeneration of the oocyte</p> Signup and view all the answers

    How many polar bodies are formed at the end of oogenesis?

    <p>3</p> Signup and view all the answers

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