Question

44
what would result if the right lateral spinothalamic tract is severed?
multiple choice
pain impulses from the right side of the body would be blocked
pain impulses from the left side of the body would be blocked
muscles on the right side of the body would be paralyzed.
muscles on the left side of the body would be paralyzed.

Explanation:

The right lateral spinothalamic tract carries pain and temperature sensations. It decussates (crosses) at the spinal cord level. So, it transmits information from the opposite (left) side of the body. Severing it would block pain impulses from the left side. Muscles are not controlled by this tract (motor tracts like corticospinal control muscles).

Answer:

Pain impulses from the left side of the body would be blocked.