External Anatomy Of The Spinal Cord

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| By Meghan1129
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Meghan1129
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Quizzes Created: 9 | Total Attempts: 32,679
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  • 1/5 Questions

    Extends from 4th cervical to 1st thoracic vertebrae

    • Cervical enlargement
    • Lumbar enlargement
    • Conus medullaris
    • Filum terminale
    • Cauda equina
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About This Quiz

This quiz on the External Anatomy of the Spinal Cord tests knowledge on key structures such as cervical and lumbar enlargements, filum terminale, conus medullaris, and cauda equina. It's designed for learners to understand spinal cord anatomy crucial for medical education.

Spinal Cord Quizzes & Trivia

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  • 2. 

    The roots of spinal nerves emerging from the lower part of the spinal cord travel inferiorly to form this.

    • Cervical enlargement

    • Lumbar enlargement

    • Conus medullaris

    • Filum terminal

    • Cauda equina

    Correct Answer
    A. Cauda equina
    Explanation
    The cauda equina is formed by the roots of the spinal nerves that emerge from the lower part of the spinal cord. These nerves travel inferiorly and fan out, resembling a horse's tail (cauda equina in Latin). The cauda equina is located below the conus medullaris, which is the tapered end of the spinal cord. The cervical enlargement and lumbar enlargement refer to the widened areas of the spinal cord in the neck and lower back, respectively. The filum terminal is a slender strand of connective tissue that extends from the conus medullaris to anchor the spinal cord.

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  • 3. 

    An extension of the pia mater that extends inferiorly from the conus medullaris to attatch the spinal cord to the coccyx

    • Cervical enlargement

    • Lumbar enlargement

    • Conus medullaris

    • Filum terminale

    • Cauda equina

    Correct Answer
    A. Filum terminale
    Explanation
    The correct answer is filum terminale. The filum terminale is an extension of the pia mater that attaches the spinal cord to the coccyx. It extends inferiorly from the conus medullaris, which is the tapered end of the spinal cord. The filum terminale helps to stabilize the spinal cord within the vertebral canal and prevents excessive movement. It is composed of fibrous tissue and is part of the coccygeal ligament. The cervical enlargement and lumbar enlargement are regions of the spinal cord where the nerves for the upper and lower limbs originate, respectively. The conus medullaris is the tapering end of the spinal cord, and the cauda equina is a bundle of nerves that extends from the conus medullaris.

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  • 4. 

    Extends from the 9th to 12th thoracic vertebrae

    • Cervicle enlargement

    • Lumbar enlargement

    • Conus medullaris

    • Filum terminale

    • Cauda equina

    Correct Answer
    A. Lumbar enlargement
    Explanation
    The lumbar enlargement refers to the section of the spinal cord that extends from the 9th to the 12th thoracic vertebrae. This region is characterized by a slight thickening of the spinal cord, which is responsible for supplying nerves to the lower limbs. The lumbar enlargement is an important anatomical feature as it contains the nerve roots that innervate the lower body, allowing for movement and sensation in the legs.

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  • 5. 

    Ends at the level of the interverterbral disc between the 1st and 2nd lumbar vertebrae

    • Cervical enlargement

    • Lumbar enlargement

    • Conus medullaris

    • Filum terminale

    • Cauda equina

    Correct Answer
    A. Conus medullaris
    Explanation
    The conus medullaris is the correct answer because it is the tapered end of the spinal cord, which typically ends at the level of the intervertebral disc between the 1st and 2nd lumbar vertebrae. It is located below the lumbar enlargement and is the final portion of the spinal cord before it continues as the filum terminale and cauda equina.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 07, 2010
    Quiz Created by
    Meghan1129
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