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noun(anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the braintype of:
Definition that contains sulcus
- calcarine fissure a sulcus in the mesial surface of the occipital lobe of the cerebrum
- parieto-occipital sulcus a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres
- calcarine sulcus a sulcus in the mesial surface of the occipital lobe of the cerebrum
- postcentral gyrus the convolution of parietal lobe that is bounded in front by the central sulcus
- central gyrus either of two gyri on either side of the central sulcus
- precentral gyrus the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area
- parieto-occipital fissure a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres