The frontal lobe is located in the anterior cranial fossa.
The central sulcus divides the frontal lobe from the parietal lobe in a coronal plane.
The gyrus anterior to the central sulcus is called the precentral sulcus and serves as the primary motor area of the brain.
The remainder of the frontal lobe is used in modifying motor actions.
1. A. Lateral view 
(Click on label for function)
B. Medial view of the sagittal section
USMLE Reviewer (By Subscription)