Spinal Cord Anatomy and Function Quiz
10 Questions
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Spinal Cord Anatomy and Function Quiz

Created by
@WinningFaith

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Questions and Answers

At what level does the spinal cord end in an adult?

  • Level of the disc between L1/2 vertebrae (correct)
  • Level of the disc between T12/L1 vertebrae
  • Level of the disc between L2/3 vertebrae
  • Level of the disc between L3/L4 vertebrae

    • What is the length of the spinal cord in females?

  • 45 cm
  • 42 cm (correct)
  • 40 cm
  • 48 cm

    • At what level does the spinal cord end at birth?

  • Level of L3 vertebra (correct)
  • Level of L4 vertebra
  • Level of T12 vertebra
  • Level of L2 vertebra

    • Which part of the spinal cord gives origin to the brachial plexus of the upper limb?

    <p>Cervical enlargement (C5-T1)</p> Signup and view all the answers

    What occupies the upper 2/3 of the vertebral canal?

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

    How many pairs of spinal nerves originate from the lumbar segments?

    <p>5</p> Signup and view all the answers

    What type of fibers does the dorsal root contain?

    <p>General somatic afferent (sensory) fibers</p> Signup and view all the answers

    Where do the ventral and dorsal roots unite to form the spinal nerve trunk?

    <p>At the corresponding intervertebral foramen</p> Signup and view all the answers

    What do the primary rami of the spinal nerve supply?

    <p>Anterior and posterior aspects of the body</p> Signup and view all the answers

    What is the function of the dorsal root ganglion?

    <p>Carries sensory fibers</p> Signup and view all the answers

    Study Notes

    Spinal Cord Characteristics

    • The spinal cord typically ends at the level of L1 (first lumbar vertebra) in an adult.
    • The length of the spinal cord in females is approximately 42-45 cm.

    Fetal Development

    • At birth, the spinal cord ends at the level of L3 (third lumbar vertebra).

    Brachial Plexus Origin

    • The C5-T1 spinal cord segments give origin to the brachial plexus of the upper limb.

    Vertebral Canal Composition

    • The upper 2/3 of the vertebral canal is occupied by the spinal cord.

    Lumbar Segments

    • There are 5 pairs of spinal nerves that originate from the lumbar segments.

    Dorsal Root Composition

    • The dorsal root contains sensory fibers.

    Spinal Nerve Formation

    • The ventral and dorsal roots unite to form the spinal nerve trunk in the intervertebral foramen.

    Primary Rami Function

    • The primary rami of the spinal nerve supply the corresponding dermatomes.

    Dorsal Root Ganglion Function

    • The dorsal root ganglion is responsible for transmitting sensory information from the periphery to the spinal cord.

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    Description

    Test your knowledge of the human spinal cord with this quiz. Explore its anatomy, length, and extent, including its connection to the medulla oblongata and conus medullaris.

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