In humans,which of the following body parts probably has the greatest corresponding area of primary motor cortex?
A) the torso
B) the legs
C) the lips
D) the neck

Question

Quizplus · Accepted Answer

The lips have a very high level of dexterity and require precise motor control for speech and facial expressions, indicating a larger corresponding area of the primary motor cortex. The size of the corresponding areas of the primary motor cortex is proportional to the level of dexterity and fine motor control in that body part.

In Humans,which of the Following Body Parts Probably Has the Greatest