sulcus centralis
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| Noun | 1. | sulcus centralis - a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes sulcus - (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain cerebrum - anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans |