The Disproportionate Cortical Representation in the Primary Motor Cortex of the Fingers

Multiple Choice

The disproportionate cortical representation in the primary motor cortex of the fingers and mouth is due to the fact that

A) the hands and mouth take more innervation to move.
B) are less sensitive than other areas of the body.
C) are more sensitive than other areas of the body.
D) require greater precision of movement.
E) require less precision of movement.