| isthmus gyri cinguli | The narrowing of the cingulate gyrus, at its transition with the hippocampal gyrus behind and below the splenium of the corpus callosum, caused by the anterior extension of the conjoined parieto-occipital and calcarine sulci. Synonym: isthmus gyri cinguli, isthmus of gyrus fornicatus, isthmus of limbic lobe. (05 Mar 2000) |
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| occipital gyri | See: inferior occipital gyrus, superior occipital gyrus. (05 Mar 2000) |
| orbital gyri | A number of small, irregular convolutions occupying the concave inferior surface of each frontal lobe of the cerebrum. Synonym: gyri orbitales. (05 Mar 2000) |
| transverse temporal gyri | Two or three convolutions running transversely on the upper surface of the temporal lobe bordering on the lateral (sylvian) fissure, separated from each other by the transverse temporal sulci. Synonym: gyri temporales transversi, Heschl's gyri, transverse temporal convolutions. (05 Mar 2000) |
| uncus gyri parahippocampalis | Origin: L. <zoology> A hook or claw. Source: Websters Dictionary (01 Mar 1998) |