Why does the primary somatosensory area have a larger section dedicated to the fingers and hand, than to the feet and toes?
A) We take in more sensory information with our fingers and hands..
B) The fingers and hand are above the spinal cord termination, while the feet and toes are below it.
C) The feet and toes require more motor area so they get less somatosensory area.
D) The feet and toes are not innervated.
E) The fingers and hand do not have motor area sections, so they are controlled by the somatosensory area.

Question

Quizplus · Accepted Answer

The primary somatosensory area is organized according to the amount of sensory information processed from different parts of the body. The fingers and hands are involved in complex tasks requiring fine sensory discrimination, thus they have a larger representation in the somatosensory cortex compared to the feet and toes.

Why Does the Primary Somatosensory Area Have a Larger Section