Placenta Power
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Questions and Answers

By the end of which month of pregnancy in humans, does the foetus develop limbs and digits?

  • 2 months (correct)
  • 1 month
  • 9 months
  • 5 months
  • When can the first movements of the foetus and appearance of hair on the head be observed in humans?

  • 9 months
  • 1 month
  • 2 months
  • 5 months (correct)
  • By the end of which trimester in humans, are most of the major organ systems formed?

  • First trimester (correct)
  • Third trimester
  • Second trimester
  • All trimesters
  • At what stage of pregnancy in humans, is the embryo's heart formed?

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

    By the end of how many weeks of pregnancy in humans, is the body covered with fine hair, eye-lids separate, and eyelashes formed?

    <p>24 weeks</p> Signup and view all the answers

    How long does human pregnancy typically last?

    <p>9 months</p> Signup and view all the answers

    How long does pregnancy typically last in dogs?

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

    How long does pregnancy typically last in elephants?

    <p>18 months</p> Signup and view all the answers

    How long does pregnancy typically last in cats?

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

    By the end of how many months of pregnancy in humans, is the foetus fully developed and ready for delivery?

    <p>9 months</p> Signup and view all the answers

    During pregnancy, the placenta facilitates the supply of _______ to the embryo.

    <p>oxygen and nutrients</p> Signup and view all the answers

    Which of the following hormones is NOT produced by the placenta during pregnancy?

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

    What is the function of the umbilical cord?

    <p>To connect the placenta to the embryo</p> Signup and view all the answers

    Which of the following hormones is NOT increased severalfolds in the maternal blood during pregnancy?

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

    Which layer of the inner cell mass gives rise to all tissues and organs in adults?

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

    What are the finger-like projections on the trophoblast called?

    <p>chorionic villi</p> Signup and view all the answers

    What is the structural and functional unit formed by the interdigitation of chorionic villi and uterine tissue?

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

    Which hormone is secreted by the ovary during the later phase of pregnancy?

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

    Which of the following is NOT a hormone produced by the placenta?

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

    What is the role of the placenta as an endocrine tissue?

    <p>To produce hormones necessary for supporting fetal growth</p> Signup and view all the answers

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