You are a neurosurgeon mapping a patient's primary motor cortex.You know that the region dedicated to the quadriceps muscles will be larger than the region dedicated to the hand muscle because the quadriceps are larger than the hand muscles.

Question

Quizplus · Accepted Answer

The size of the cortical region dedicated to a particular body part in the primary motor cortex is related to the fine motor control and complexity of movements required by that body part, not its physical size. The hand has a larger cortical representation than the quadriceps due to its complex motor functions.

You Are a Neurosurgeon Mapping a Patient's Primary Motor Cortex