Asked by Shary Matthews on May 30, 2024
Verified
Margaret had a stroke that damaged the right side of her brain.Yet,she has difficulty moving her left arm,not her right arm.This indicates that the
A) somatosensory cortex is responsible for phantom limb movements.
B) motor cortex on the right side of the brain controls movements of specific body parts on the right side of the body.
C) association areas of the brain control movements of all body parts.
D) motor cortex on the right side of the brain controls movements of specific body parts on the opposite side of the body.
Somatosensory Cortex
is a part of the brain responsible for processing sensory information from the body, including touch, temperature, and pain.
Motor Cortex
An area within the cerebral cortex dedicated to planning, controlling, and carrying out voluntary movements.
Phantom Limb Movements
Sensations where amputees feel that their missing limbs are still moving or have sensation.
- Grasp the role of the motor cortex in controlling movement across the body's contralateral sides.
Verified Answer
MG
mayelin GarciaMay 31, 2024
Final Answer :
D
Explanation :
This scenario indicates that damage to the right side of the brain has affected Margaret's ability to move her left arm, which is controlled by the motor cortex on the opposite side of the body. This is consistent with the principle of contralateral organization of the brain, where the left hemisphere controls movements of the right side of the body and vice versa. This principle is primarily mediated by the motor cortex, which is responsible for voluntary movements of specific body parts.
Learning Objectives
- Grasp the role of the motor cortex in controlling movement across the body's contralateral sides.