Embryonic Development and Stem Cells Quiz
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Questions and Answers

Which structure initially receives all venous blood flow in the developing heart?

  • Sinus venosus (correct)
  • Infundibulum
  • Bulbus cordis
  • Primitive ventricle
  • Which structure divides to form the aorta and pulmonary artery?

  • Primitive atrium
  • Primitive ventricle
  • Bulbus cordis (correct)
  • Infundibulum
  • Which structure will form the left ventricle?

  • Bulbus cordis
  • Primitive ventricle (correct)
  • Infundibulum
  • Primitive atrium
  • Which structure will become the front parts of the heart?

    <p>Primitive atrium</p> Signup and view all the answers

    In which direction is the blood initially propelled in the developing heart?

    <p>Tail to head</p> Signup and view all the answers

    Which structure is located at the tail end of the developing heart?

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

    During organogenesis in humans, folds form in the germinal sheet of cells and usually form an enclosed tube. Which structure develops this way?

    <p>Neural tube</p> Signup and view all the answers

    What is the primary step in organogenesis for chordates?

    <p>Development of the notochord</p> Signup and view all the answers

    In plants, where does organogenesis occur continuously?

    <p>Shoot apical meristems</p> Signup and view all the answers

    During which phase of embryonic development does organogenesis occur?

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

    Which germ layer forms the gastrointestinal and respiratory organs?

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

    Which germ layer forms the brain and nervous system?

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

    Which type of signaling influences cell differentiation during organogenesis?

    <p>Paracrine signaling</p> Signup and view all the answers

    In the 1820s, embryologist Heinz Christian Pander discovered that the germ layers cannot form their respective organs without the cellular interactions from which other tissues?

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

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