. Cunningham's Text-book of anatomy. Anatomy. 666 THE NEKVOUS SYSTEM. On the medial aspect of the frontal lohe there are two convolutions, the larger peripheral area which forms part of the gyrus frontalis superior and a smaller inner part encircling the corpus callosum, which is called the gyrus cinguli. These gyri are separated by the sulcus cinguli (Fig. 589). The posterior part of the sulcus cinguli is genetically distinct from the anterior part â and it circumscribes a broader area, the lobulus paracentralis, which is con- tinuous with the gyri centrales. Inferior frontal gy Superior fron
. Cunningham's Text-book of anatomy. Anatomy. 666 THE NEKVOUS SYSTEM. On the medial aspect of the frontal lohe there are two convolutions, the larger peripheral area which forms part of the gyrus frontalis superior and a smaller inner part encircling the corpus callosum, which is called the gyrus cinguli. These gyri are separated by the sulcus cinguli (Fig. 589). The posterior part of the sulcus cinguli is genetically distinct from the anterior part â and it circumscribes a broader area, the lobulus paracentralis, which is con- tinuous with the gyri centrales. Inferior frontal gy Superior frontal gyrus (inter- I ' Intermediate part of inferior frontal gyrus mediate part) J Gyrus frontalis superior (anterior part) \ Sulcus . Interior ascending ramus of lateral fissure Anterior part of inferior frontal gyrus Middle frontal area nterior horizontal ramus of lateral cerebral fissure Inferior precentral sulcus Middle frontal gyrus (posterior part) , â (posterior part) | I Gyrus frontalis superior 1 Superior precentral sulcus Area supramargiiialis anterior Motor cortex. Gyrus centralis posterku Sulcus postcentralis j Sulcus centralis . , Sensory cortex y 'Anterior part *^ s Intermediate part V Gj Posterior part J Superior parietal lobule (anterior ,' part) /Supramargiiial gyrus .Sulcus parietalis superior Sulcus intermedins Gyrus annularis ("pai Superior parietal lobule (pos Sulcus interparietals propri 'Lat. fis. (ascend, term. pie< Sulcus angularis Sulcus paroccipitalis Area peristriata Incisura parieto- / occipitalis Anterior occipital prseoccipitalis Area parastriata lcus occipitalis paramedians Area fronto polarâ Sulcus anterior ramus / Area frontomarginalis Area ;, Fissura orbitalis transverse limb Area temporalis polari Sulcus temporalis anterior Middle temporal gyru~ Middle temporal sulcus , Inferior temporal gyrus Pars circumambiens (superior temporal gyrus) Sulcus occipitalis lateralis Area prasoccipitalis Area occi pi to tempor
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