What is the pattern of cortical representation in the motor homunculus for fine motor skills as compared to the area for gross motor skills?

Question

Quizplus · Accepted Answer

Areas in the motor homunculus responsible for fine motor skills, for example, your thumbs or tongue, have more cortical representation than areas for gross motor skills.This pattern is because fine motor activities take a smaller innervation ratio of neurons to motor units, thus requiring more gray matter for the complexity of the movement.

What Is the Pattern of Cortical Representation in the Motor