In the motor map of the primary motor cortex:
A)Each muscle is represented by a single cortical column.
B)Each muscle is represented by multiple columns within a single continuous region.
C)The number of cortical columns representing a muscle is proportional to the mass of the muscle.
D)The amount of territory representing a muscle is correlated with the degree of fine control over movements made using that muscle.
E)Columns controlling different muscles are randomly intermixed.

Question

Quizplus · Accepted Answer

The primary motor cortex allocates more cortical territory to muscles that require fine motor control, such as those in the hands and face, rather than based on muscle mass.

In the Motor Map of the Primary Motor Cortex