A patient presents with a lesion affecting the left dorsal column of the spinal cord at the level of T10. Which of the following sensory deficits would be expected?
A
Loss of pain and temperature sensation on the left side below T10
B
Loss of vibration and proprioception on the right side below T10
C
Loss of vibration and proprioception on the left side below T10
D
Loss of pain and temperature sensation on the right side below T10
✓ Correct Answer: Option C
The dorsal column (fasciculus gracilis and cuneatus) carries ipsilateral fine touch, vibration, and proprioception. A lesion on the left dorsal column at T10 would cause loss of vibration and proprioception on the left side below the lesion.
💡 Why is C) the correct answer?
The correct answer to the question "A patient presents with a lesion affecting the left dorsal column of the spinal cord at the level of T10. Which of the following sensory deficits would be expected?" is Option C: Loss of vibration and proprioception on the left side below T10.
The other options — A) Loss of pain and temperature sensation on the left side below T10, B) Loss of vibration and proprioception on the right side below T10, D) Loss of pain and temperature sensation on the right side below T10 — are incorrect for this USMLE Exam Prep question. As explained above: The dorsal column (fasciculus gracilis and cuneatus) carries ipsilateral fine touch, vibration, and proprioception. A lesion on the left dorsal column at T10 would cause loss of vibration and proprio…
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