Fertilization and Cleavage Division in Reproduction
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Questions and Answers

Where does fertilization take place?

  • In the ovary
  • In the cervix
  • In the lateral third of the Fallopian tube (correct)
  • In the uterus

    • How soon after fertilization does the two-cell stage appear?

  • 40 hours
  • 30 hours (correct)
  • 50 hours
  • 20 hours

    • What is the main result of fertilization?

  • Restoration of the diploid number of chromosomes
  • Determination of the sex of the embryo
  • Cleavage division starts
  • All of the above (correct)

    • Which cells in the morula will form the tissues of the embryo?

    <p>The cells at the inner cell mass</p> Signup and view all the answers

    What is the purpose of the trophoblast cells in the morula?

    <p>To form the placenta</p> Signup and view all the answers

    How many cell stages are mentioned in the passage?

    <p>4</p> Signup and view all the answers

    Which hormone is primarily responsible for the production of milk after childbirth?

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

    What is the role of oxytocin in lactation?

    <p>Causes contraction of the myoepithelial cells and milk ejection</p> Signup and view all the answers

    What triggers the release of prolactin and oxytocin during breastfeeding?

    <p>Stimulation of the nipples associated with suckling</p> Signup and view all the answers

    What happens to milk production when breastfeeding is discontinued?

    <p>It declines rapidly</p> Signup and view all the answers

    Which hormone is responsible for the developmental changes in the breasts that prepare them for lactation?

    <p>Estrogen and progesterone</p> Signup and view all the answers

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