Destruction of the motor areas in the right cerebral cortex results in the loss of ____.
A) sensation on the right side of the body
B) sensation on the left side of the body
C) voluntary movement on the left side of the body
D) voluntary movement on the right side of the body
E) involuntary control of the right side of the body

Question

Quizplus · Accepted Answer

The motor areas of the brain's cerebral cortex control voluntary movements. The brain's right side controls the left side of the body, and vice versa, due to the crossing of the motor pathways (pyramidal tracts) in the medulla oblongata. Therefore, damage to the motor areas in the right cerebral cortex would result in a loss of voluntary movement on the left side of the body.

Destruction of the Motor Areas in the Right Cerebral Cortex