The urge to move your arm in response to a threatening stimulus depends on activation of the
A) parietal cortex.
B) corpus callosum.
C) supplemental motor area.
D) posterior cingulated cortex.
E) the primary visual cortex

Question

Quizplus · Accepted Answer

The supplemental motor area (SMA) is involved in the planning and initiation of movement. In response to a threatening stimulus, the SMA might activate the motor neurons in the spinal cord that control the muscles responsible for moving the arm away from the threat. The parietal cortex, corpus callosum, and posterior cingulated cortex are not directly involved in movement planning or execution. The primary visual cortex detects visual stimuli but does not initiate movement in response to them.

The Urge to Move Your Arm in Response to a Threatening