Trunk and girdle muscles are controlled by descending signals from neurons in which of the following?
A. Supplementary motor area
B. Premotor area
C. Broca's area
D. Area analogous to Broca's area in the nondominant hemisphere
E. Primary motor cortex
ANS: B
Rationale: Descending signals from the premotor cortex provide motor control of the trunk and girdle musculature.
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