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Left Lateral View of Cerebrum and Cerebellum

Surgical Correlation

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Left lateral view of cerebrum and cerebellum. The superolateral surface of the frontal lobe is represented by several gyri. The medial most gyrus is the superior frontal gyrus extending from the frontal pole anteriorly to the precentral sulcus and gyrus posteriorly. Inferolateral to the superior frontal gyrus is the middle frontal gyrus. The two gyri are separated by the superior frontal sulcus. The inferior frontal sulcus separates the middle frontal from the inferior frontal gyrus. The inferior frontal gyrus is divided from anterior to posterior into pars orbitalis, triangularis, and opercularis. The inferior frontal gyrus is separated from the temporal lobe by the lateral sulcus or Sylvian fissure. The temporal lobe is composed of the superior, middle, and inferior temporal gyri, separated by the superior and inferior temporal sulci, respectively. The precentral gyrus or primary motor cortex is the posterior portion of the frontal lobe. It is separated from the postcentral gyrus or primary somatosensory cortex of the parietal lobe by the central sulcus. The inferior portion of the postcentral gyrus merges with the supramarginal gyrus, a component of the multimodal somatosensory association cortex contributed also by the angular gyrus located immediately posterior to it. Together, they compose the inferior parietal lobule. The tentorium cerebelli (not preserved in this preparation) separates the cerebrum from the cerebellum. (Image courtesy of PA Rubino.)

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