The primary motor projection area forms a "map" of the body, and the projections control movement to specific areas of the body. What is the variation in the amount of cortical tissue dedicated to different parts of the body based on?

Question

Quizplus · Accepted Answer

The amount of cortical tissue dedicated to different parts of the body is based on the precision of movement required for that body part. Parts of the body requiring more precise movement, such as the fingers and lips, have a larger representation in the motor cortex than other body parts that require less precision.

The Primary Motor Projection Area Forms a "Map" of the Body