A 25-year-old soldier suffers a gunshot wound on the lower part of his back and is unable to move his legs. A neurologic examination and magnetic resonance imaging (MRI) scan reveal injury of the cauda equina. No other dysfunction is noted. Damage to the following structure could explain the inability to move his legs: dorsal primary rami at spinal cord level L2. True O False

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Clinical Scenario:**

A 25-year-old soldier suffers a gunshot wound on the lower part of his back and is unable to move his legs. A neurologic examination and magnetic resonance imaging (MRI) scan reveal injury of the cauda equina. No other dysfunction is noted. Damage to the following structure could explain the inability to move his legs: dorsal primary rami at spinal cord level L2.

**Question:**

- True
- False

**Analysis:**

This scenario requires an understanding of spinal cord anatomy and nerve function. The cauda equina comprises a bundle of spinal nerves and nerve roots, which is vital for motor and sensory functions in the lower limbs. The dorsal primary rami generally carry sensory information rather than motor, relating to this context. Therefore, consider what structures are more likely involved in leg movement.
Transcribed Image Text:**Clinical Scenario:** A 25-year-old soldier suffers a gunshot wound on the lower part of his back and is unable to move his legs. A neurologic examination and magnetic resonance imaging (MRI) scan reveal injury of the cauda equina. No other dysfunction is noted. Damage to the following structure could explain the inability to move his legs: dorsal primary rami at spinal cord level L2. **Question:** - True - False **Analysis:** This scenario requires an understanding of spinal cord anatomy and nerve function. The cauda equina comprises a bundle of spinal nerves and nerve roots, which is vital for motor and sensory functions in the lower limbs. The dorsal primary rami generally carry sensory information rather than motor, relating to this context. Therefore, consider what structures are more likely involved in leg movement.
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