Initiation of movement, orientation, and planning of bimanual or sequential movements are influenced by 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: A
Rationale: The supplementary motor cortex is important for initiating movement, orienting the eyes and head, and planning bimanual and sequential movements. The premotor cortex controls the trunk and girdle muscles, whereas Broca's area and its contralateral analog are responsible for the motor planning of speech and nonverbal communication.
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