sulcus

[sul´kus] (L.)

a groove or furrow; used in anatomic nomenclature to designate a linear depression, especially one of the cerebral sulci.

basilar sulcus a groove in the midline of the anterior surface of the pons, lodging the basilar artery.

calcarine sulcus a sulcus of the medial surface of the occipital lobe, separating the cuneus from the lingual gyrus.

central sulcus fissure of Rolando.

cerebral sulci the furrows on the surface of the brain between the gyri (see gyrus).

Cerebral sulci, showing some major ones on the superolateral surface of the left cerebral hemisphere. From Dorland's, 2000.

collateral sulcus collateral fissure.

sul´ci cu´tis fine depressions of the skin between the ridges of the skin.

gingival sulcus the space between the surface of the tooth and the epithelium lining the free gingiva.

hippocampal sulcus hippocampal fissure.

posterior median sulcus posterior median fissure.

hip·po·cam·pal sul·cus

[TA]

a shallow groove between the dentate gyrus and the parahippocampal gyrus; the remains of a fissure extending deep into the hippocampus between the Ammon horn and the dentate gyrus, which becomes obliterated during fetal development.

Synonym(s): sulcus hippocampalis [TA], dentate fissure, fissura dentata, fissura hippocampi, hippocampal fissure

hip·po·cam·pal sul·cus

(hip'ō-kam'păl sŭl'kŭs) [TA]

A shallow groove between the dentate gyrus and the parahippocampal gyrus; the remains of a fissure extending deep into the hippocampus between Ammon horn and the dentate gyrus that becomes obliterated during fetal development.