| SNR | substantia nigra reticulata |
|---|---|
| SN-VTA | substantia nigra-ventral tegmental area |
| facies contactus dentis | The surface of a tooth that faces an adjacent tooth in the dental arch; the contact surface that is closest to the anterior midline of the dental arch is the mesial surface of a tooth; that farthest is the distal surface. Synonym: facies approximalis dentis, facies contactus dentis. (05 Mar 2000) |
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| facies distalis dentis | The contact surface of a tooth that is directed away from the median plane of the dental arch; opposite to the mesial surface of a tooth. Synonym: facies distalis dentis. (05 Mar 2000) |
| facies facialis dentis | An alternate term for vestibular surface of tooth. (05 Mar 2000) |
| facies lingualis dentis | The surface of a tooth that faces the tongue; opposite to the facies vestibulum dentis. Synonym: facies lingualis dentis. (05 Mar 2000) |
| facies mesialis dentis | The contact surface of a tooth that is directed toward the median plane of the dental arch; opposite to the facies distalis dentis. Synonym: facies mesialis dentis. (05 Mar 2000) |
| facies occlusalis dentis | That portion of the surface of a denture that makes contact or near contact with the corresponding surface of an opposing denture or tooth. Synonym: facies occlusalis dentis, facies masticatoria, grinding surface, masticating surface, masticatory surface, occlusal surface. (05 Mar 2000) |
| facies vestibularis dentis | The surface of a tooth that faces the buccal or labial mucosa of vestibule of the mouth; opposite to the lingual surface of tooth. Synonym: facies vestibularis dentis, facies facialis dentis, buccal surface, facial surface of tooth, facies buccalis, facies labialis, labial surface. (05 Mar 2000) |
| foramen apicis dentis | The opening at the apex of the root of a tooth that gives passage to the nerve and blood vessels. Synonym: foramen apicis dentis, apical dental foramen, root foramen. (05 Mar 2000) |
| fovea dentis atlantis | A circular facet on the posterior (inner) surface of the anterior arch of the atlas which articulates with the dens of the axis. Synonym: fovea dentis atlantis, pit of atlas for dens. (05 Mar 2000) |
| ligamentum apicis dentis | A ligament that extends from the apex of the dens of the axis to the anterior margin of the foramen magnum; includes vestiges of notochord. Synonym: ligamentum apicis dentis. (05 Mar 2000) |
| substantia | Synonym: substance. Origin: L. (05 Mar 2000) |
| substantia adamantina | <dentistry> A hard ceramic which covers the exposed part of your teeth. (08 Jan 1998) |
| substantia alba | <anatomy> Brain tissue composed of myelin-coated nerve cell fibres. White matter carries information between the nerve cells in the brain and spinal cord. The inner portion of the cerebrum is composed of white matter. See: grey matter. (13 Nov 1997) |
| substantia basophilia | The material consisting of granular endoplasmic reticulum and ribosomes that occurs in nerve cell bodies and dendrites. Synonym: basophil substance, basophilic substance, chromophil substance, Nissl bodies, Nissl granules, substantia basophilia, tigroid bodies, tigroid substance. (05 Mar 2000) |
| substantia cinerea | The cortex of the brain which contains nerve cell bodies. The gray matter is in contrast to the white matter, the part of the brain that contains myelinated nerve fibres. The gray matter is so named because it in fact appears gray. The white matter is white because that is the colour of myelin, the insulation covering the nerve fibres. In the mysterious affair at styles (1920), agatha christie first quoted the fictional belgian detective hercule poirot in regard to his gray matter: 'this affair must be unravelled from within.' he tapped his forehead. 'these little grey cells. It is up to them as you say over here.' (12 Dec 1998) |