Development of the Vertebral Column
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Questions and Answers

During the 4th week of development, what do the somites differentiate into?

  • Lateral plate mesoderm and somitomeres
  • Neural tube and somatomeres
  • Sclerotomes and dermomyotomes (correct)
  • Notochord and intermediate mesoderm
  • What migrates ventromedially during the formation of the mesenchymal vertebral column?

  • Lateral plate mesoderm
  • Intermediate mesoderm
  • Dermomyotomes
  • Sclerotomes (correct)
  • What differentiates into a less condensed cephalic part and a more condensed caudal part during the formation of the mesenchymal vertebral column?

  • Notochord
  • Sclerotomic segment (correct)
  • Intermediate mesoderm
  • Dermomyotome
  • Which stage in the development of the vertebral column involves the formation of cartilaginous structures?

    <p>Stage of ossification of vertebral column</p> Signup and view all the answers

    Which structure appears as the first sign during specialization of the mesoderm in vertebral column development?

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

    What typically transmits a spinal ganglion and a ventral root of a spinal nerve through each intervertebral foramen?

    <p>Spinal nerves</p> Signup and view all the answers

    The cells of the sclerotomes migrate dorsolaterally to surround the spinal cord and notochord during the formation of the mesenchymal vertebral column.

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

    The mesenchymal column retains its segmental origin as the sclerotomic segments are separated by dense areas containing the intersegmental arteries.

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

    During the 4th week of development, the somites differentiate into somites and dermomyotomes.

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

    Each sclerotomic segment differentiates into a more condensed cephalic part and a less condensed caudal part during the formation of the mesenchymal vertebral column.

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

    The stage of ossification of the vertebral column occurs before the stage of formation of cartilaginous vertebral column.

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

    The intervertebral foramina typically transmit a spinal ganglion and a dorsal root of a spinal nerve.

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

    Specialization of the ectoderm is a key process in the development of the vertebral column.

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

    Only two collections of mesoderm appear lateral to the notochord during the development of the vertebral column.

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

    The appearance of three collections of mesoderm lateral to the notochord is accompanied by the disappearance of the notochord.

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

    The double sheets of lateral plate mesoderm do not play a role in the development of the vertebral column.

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

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