Question

Evan can move his arm when asked to, but cannot decide to pick up a glass. What brain region may be affected?

A

primary motor cortex

B

supplementary motor area

C

premotor cortex

D

cerebellum

Answer 1

1. Evan can move his arm when asked to, but cannot decide to pick up a glass then the primary motor cortex of the brain region may be affected.

2. The motor system of the brain is located in the frontal lobes and it starts with the premotor areas, for planning and coordinating complex movement and it is end up with the primary cortex.

3. In the primary motor cortex on the left side of the brain control the movement of the right side of the body and the right side of the brain control the movement of the left side of the body.

4. Primary control cortex controls the movement of the different parts of the body and form a kind of body map which is known as homunculus.

5. The homunculus size tells about the fine movement control.