A "motor homunculus" can be visualized as an overlay on the precentral gyrus. The reason the facial region of this homunculus covers such a large surface area is that
A) our ears are large for hearing.
B) our eyes are large for seeing.
C) we have very expressive faces.
D) we have very sensitive lips.

Question

Quizplus · Accepted Answer

The facial region of the homunculus covers a large surface area because humans have very expressive faces. This allows us to convey a wide range of emotions and communicate nonverbally, making our facial muscles important for social interaction.

A "Motor Homunculus" Can Be Visualized as an Overlay on the Precentral