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 correlates with the degree of fine control over movements made using that muscle
E. columns controlling different muscles are randomly intermixed
ANS: D
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