Sulcus (anatomy)
Encyclopedia
A sulcus is a depression or fissure in the surface of an organ, especially the brain
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Brain
The brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...
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Elsewhere
- anterior interventricular sulcus
- calcaneal sulcus
- coronal sulcus
- gingival sulcusGingival sulcusThe gingival sulcus is an area of potential space between a tooth and the surrounding gingival tissue and is lined by sulcular epithelium. The depth of the sulcus is bounded by two entities: apically by the gingival fibers of the connective tissue attachment and coronally by the free gingival...
- gluteal sulcus
- interlabial sulciInterlabial sulciThe interlabial sulci are the grooves between the labia majora and the labia minora. The singular for this term is interlabial sulcus, of which there is a left and a right....
- intermammary sulcus
- lacrimal sulcus (sulcus lacrimalis)
- malleolar sulcusMalleolar sulcusThere are two malleolar sulci, medial and lateral.The medial malleolar sulcus is the posto-inferior groove just lateral to the medial malleolus on the distal part of the tibia...
- posterior interventricular sulcus
- preauricular sulcus
- radial sulcusRadial sulcusThe radial sulcus is a broad but shallow oblique depression for the radial nerve and deep brachial artery. It is located on the center of the lateral border of the humerus bone....
(musculospiral groove) - sagittal sulcusSagittal sulcusThe internal surface of the squama frontalis of the frontal bone is concave and presents in the upper part of the middle line a vertical groove, the sagittal sulcus, the edges of which unite below to form a ridge, the frontal crest; the sulcus lodges the superior sagittal sinus, while its margins...
- separatoral sulcus (depression behind the brow ridges of some primates)
- sigmoid sulcusSigmoid sulcusThe inner surface of the mastoid portion of the temporal bone presents a deep, curved groove, the sigmoid sulcus, which lodges part of the transverse sinus; in it may be seen the opening of the mastoid foramen....
- sulcus arteriæ vertebralis
- sulcus subtarsalisSulcus subtarsalisSulcus subtarsalis is a groove in the innersurface of eyelid near the eyelid margin and which is also parallel to it. This separates marginal Conjunctiva from tarsal conjunctiva. It provides space for lodging of foreign bodies. Arlt's line is a linear line present in the sulcus subtarsalis in...
in the eyelid - sulcus tubae auditivaeSulcus tubae auditivaeThe lateral half of the great wing articulates, by means of a synchondrosis, with the petrous portion of the temporal, and between the two bones on the under surface of the skull, is a furrow, the sulcus tubæ, for the lodgement of the cartilaginous part of the auditory tube....
- tympanic sulcus
- urethral sulcus, in the baculumBaculumThe baculum is a bone found in the penis of most mammals. It is absent in humans, but present in other primates, such as the gorilla and chimpanzee.The bone aids in sexual intercourse.-Purpose:...
i.e penile bone