Ch 15&16 brain/neurons
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Questions and Answers

During neurulation, the process by which the three ectoderm regions are made physically and functionally distinct from one another is called?

  • Primary neurulation
  • Secondary neurulation
  • Neurulation (correct)
  • Gastrulation
  • What is the major derivative of the ectoderm germ layer responsible for the formation of peripheral neurons, pigment, and facial cartilage?

  • Mesenchyme cells
  • Neural crest (correct)
  • Surface ectoderm
  • Neural tube
  • Which process involves the coalescence of mesenchyme cells into a solid cord that subsequently forms cavities to create a hollow tube for the posterior portion of the neural tube?

  • Secondary neurulation (correct)
  • Neurulation
  • Gastrulation
  • Primary neurulation
  • What is the embryo called when it is undergoing the processes of neurulation?

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

    Which part of the neural tube is primarily formed by the coalescence of mesenchyme cells into a solid cord that subsequently forms cavities?

    <p>Posterior portion</p> Signup and view all the answers

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