Medial Precentral sulcus and Marginal Precentral sulcus

Medial Precentral sulcus is a kind of transverse short sulcus anterior to the Central sulcus with its superior end extending into the medial surface (Figure-1,2).

 

Figure-1

Figure-2

 

The Marginal Precentral sulcus is a kind of transverse short sulcus anterior to the Central sulcus without its superior end extending into medial surface (Figure-3,4).

 

Figure-3

Figure-4