ABSTRACT
The cerebral hemispheres are mirror-image duplicates that occupy the cranial cavity and are interconnected by the corpus callosum. The corpus callosum, which forms the base of the sagittal (interhemispheric) sulcus, lies ventral and partly caudal to the anterior cerebral vessels and the falx cerebri, consisting of the rostrum, genu, trunk, and splenium. Both cerebral hemispheres are composed of an outer gray matter thrown into folds (gyri) and an inner white matter, containing the basal nuclei. Each cerebral hemisphere is divided into the frontal, parietal, temporal, occipital, central (insular cortex), and limbic lobes via sulci and ssures (Figures 8.1, 8.2, 8.6, 8.7, 8.8, and 8.9). The frontal, parietal, temporal, and occipital lobes are interconnected by the genu, trunk, and splenium of the corpus callosum, respectively. The central sulcus separates the frontal and parietal lobes and contains the Rolandic branch of the middle cerebral artery (MCA). The lateral cerebral (Sylvian) ssure (sulcus) begins in the Sylvian fossa, contains the MCA, and demarcates the temporal lobe from the frontal and parietal lobes.
