The destruction of a single dorsal root typically produces little somatosensory loss because
A) there are few cutaneous receptors in the back.
B) the dorsal roots soon degenerate.
C) there is considerable overlap of projections from adjacent dermatomes.
D) the dorsal roots accurately regenerate.
E) the somatosensory system has a motor component.

Question

Quizplus · Accepted Answer

The reason why the destruction of a single dorsal root typically produces little somatosensory loss is because there is considerable overlap of projections from adjacent dermatomes. This means that sensory information from adjacent areas can compensate for the loss of sensory input from the damaged dorsal root.

The Destruction of a Single Dorsal Root Typically Produces Little