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6th grade: reproduction exam review

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  • What is the function of the amniotic fluid?
    protect the fetus
  • Describe TWO things that happen during the third trimester.
    The foetus grows and gains weight, the organs mature, premature babies may be born
  • In which stage of fertilization is the zygote formed?
    The third (or when a sperm penetrates and fertilizes the egg)
  • Explain the FIRST step of fertilization.
    One ovary releases an egg and it moves along the Fallopian tube.
  • After the zygote begins to divide quickly, it forms a(n) ________.
    embryo
  • Eggs and sperm contain ____ of the genetic information that is needed to create a new human.
    half
  • What happens during expulsion? (describe TWO things)
    The mother pushes the baby out of her body, the umbilical cord is cut, and the baby breathes in air and cries
  • What is the function of the placenta?
    It stores oxygen and nutrients from the mother's blood for the baby
  • Explain the FIFTH stage of fertilization.
    The embryo implants in the wall of the uterus and continues to grow and develop.
  • In which organ of the female reproductive system does fertilization take place?
    the Fallopian tubes
  • Describe TWO things that happen during the first trimester
    the brain begins to develop, the heart beats and the organs begin to function (except the lungs), small buds appear (will become arms and legs)
  • The mother pushes the _________ out of her body during delivery.
    placenta
  • _________ is the union of a female sex cell with a male sex cell.
    Fertilization
  • The embryo is called ________ at the end of the first trimester.
    a foetus
  • Describe TWO things that happen during the second trimester.
    The mother begins to feel the baby moving, the foetus can hear, suck its thumbs and fingers, and open/close its eyes
  • What does the amniotic sac contain?
    Amniotic fluid
  • _________ helps to push the baby from the uterus into the vagina.
    (rhythmic) contractions
  • In the second stage of fertilization ______ travels to the Fallopian tube.
    sperm
  • What happens during dilation?
    The area of the uterus connected to the vagina expands and contractions begin
  • What is the function of the umbilical cord?
    Connect the placenta to the baby OR transport oxygen and nutrients from mother to baby
  • What are the three stages of labour?
    Dilation, expulsion, and delivery
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