Question

question 22 (2 points) a lesion to the left dorsal region of the spinal cord at t5 causes which of the following? loss of pain and temp on the ipsilateral side below the lesion loss of pain and temp of the contralateral side above the lesion loss of vibration and proprioception below the lesion on the ipsilateral side loss of vibration and proprioception above the lesion on the contralateral side.

Explanation:

The dorsal columns of the spinal cord carry the pathways for vibration and proprioception. These pathways decussate (cross - over) in the medulla. A left - sided lesion in the dorsal region of the spinal cord at T5 will cause loss of vibration and proprioception below the lesion on the ipsilateral (same) side. Pain and temperature pathways (spinothalamic tracts) decussate at the level of entry into the spinal cord, so a left - sided lesion would not cause the pain and temperature deficits described in the other options.

Answer:

Loss of vibration and proprioception below the lesion on the ipsilateral side