FMA definition : Subarachnois sulcus, each instance of which is some vertical sulcus on the convex
surface of some cerebral hemisphere, separating some precentral gyrus from the rest
of some frontal lobe.;
Subarachnois sulcus, each instance of which is some vertical sulcus on the convex
surface of some cerebral hemisphere, separating some precentral gyrus from the rest
of some frontal lobe.