Anatomy: Accessory Nerve Roots and Pathway
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Questions and Answers

What structures does the accessory nerve consist of?

  • Cranial and spinal roots (correct)
  • Cranial root only
  • Spinal root only
  • Inferior ganglion root
  • From where does the spinal root of the accessory nerve arise?

  • Spinal cord (correct)
  • Medulla oblongata
  • The skull
  • Inferior cerebellar peduncle
  • Where do the two roots of the accessory nerve unite?

  • Jugular foramen (correct)
  • Medulla oblongata
  • Foramen magnum
  • Inferior ganglion
  • Which muscle is supplied by the cranial root of the accessory nerve?

    <p>Tensor palati</p> Signup and view all the answers

    What happens when there is an injury to the cranial part of the accessory nerve?

    <p>Deviation of uvula</p> Signup and view all the answers

    Where might the spinal part of the accessory nerve be injured due to its superficial position?

    <p>Posterior triangle of neck</p> Signup and view all the answers

    What is the consequence of an injury to the spinal part of the accessory nerve?

    <p>Shoulder drop</p> Signup and view all the answers

    Which ganglion does the cranial root of the accessory nerve join?

    <p>Inferior ganglion of vagus nerve</p> Signup and view all the answers

    What is the manifestation of an injury to the cranial part of the accessory nerve?

    <p>Deviation of the uvula toward the affected side</p> Signup and view all the answers

    Which muscles are supplied by the spinal root of the accessory nerve?

    <p>Trapezius muscle</p> Signup and view all the answers

    What is the function of the cranial root of the accessory nerve?

    <p>Supply muscles of pharynx and larynx</p> Signup and view all the answers

    Where does the spinal root of the accessory nerve enter the skull?

    <p>Foramen magnum</p> Signup and view all the answers

    Which muscle is not supplied by the cranial part of the accessory nerve?

    <p>Trapezius muscle</p> Signup and view all the answers

    What could be a consequence of an injury to the spinal part of the accessory nerve?

    <p>Shoulder drop</p> Signup and view all the answers

    Which area is prone to injury for the spinal part of the accessory nerve due to its superficial position?

    <p>Posterior triangle of neck</p> Signup and view all the answers

    What happens when there is a lesion affecting both roots of the accessory nerve?

    <p>Loss of shoulder abduction</p> Signup and view all the answers

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