| body surface potential mapping | Recording of regional electrophysiological information by analysis of surface potentials to give a complete picture of the effects of the currents from the heart on the body surface. It has been applied to the diagnosis of old inferior myocardial infarction, localization of the bypass pathway in wolff-parkinson-white syndrome, recognition of ventricular hypertrophy, estimation of the size of a myocardial infarct, and the effects of different interventions designed to reduce infarct size. The limiting factor at present is the complexity of the recording and analysis, which requires 100 or more electrodes, sophisticated instrumentation, and dedicated personnel. (12 Dec 1998) |
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| buccal surface | The mucosa of the cheek, in prosthodontics, the side of a denture adjacent to the cheek. Synonym: vestibular surface of tooth. (05 Mar 2000) |
| calcaneal articular surface of talus | One of three articular surfaces on the talus for union with the calcaneus: facies articularis calcanea anterior tali, facies articularis calcanea media tali, and facies articularis calcanea posterior tali. Synonym: facies articularis calcanea tali. (05 Mar 2000) |
| Calculus Surface Index | An index that measures only dental calculus, used for evaluating new calculus formation within a large group of test subjects. (05 Mar 2000) |
| radiation damage, surface | <radiobiology> General term describing damage to the surface of the containment structure which directly interfaces with the thermonuclear plasma, includes such phenomena as radiation blistering, charged-particle (or neutron) sputtering, and spallation or exfoliation of layers of the surface. (09 Oct 1997) |
| palatine surface of horizontal plate of palatine bone | The inferior surface of the horizontal plate of the palatine bone. Synonym: facies palatina laminae horizontalis ossis palatini. (05 Mar 2000) |
| variant surface glycoproteins, trypanosoma | Glycoproteins attached to the surface coat of the trypanosome. Many of these glycoproteins show amino acid sequence diversity expressed as antigenic variations. This continuous development of antigenically distinct variants in the course of infection ensures that some trypanosomes always survive the development of immune response to propagate the infection. (12 Dec 1998) |
| palmar surface | The palm or grasping side of the hand. (12 Dec 1998) |
| palmar surface of fingers | The flat of the fingers; the flexor or anterior surface of the fingers. Synonym: facies digitalis ventralis, facies digitalis palmaris, ventral surface of digit. (05 Mar 2000) |
| gastric surface of spleen | The surface of the spleen in contact with the stomach. Synonym: facies gastrica splenis. (05 Mar 2000) |
| malleolar articular surface of fibula | The surface on the medial aspect of the lateral malleolus that articulates with the talus. Synonym: facies articularis malleoli fibulae. (05 Mar 2000) |
| malleolar articular surface of tibia | The articular facet on the lateral surface of the medial malleolus for articulation with the side of the talus; it is continuous with the inferior articular surface of the tibia. Synonym: facies articularis malleoli tibiae. (05 Mar 2000) |
| rational surface | <physics> Magnetic flux surface where the ratio of toroidal to poloidal field strengths is a rational number, this means that a particle travelling along this surface makes an integer number of turns in each direction and then its orbit closes in on itself. The result is that the particle does not sample the entire flux surface in its motion, which is important for various technical reasons (which mostly result in reduced confinement). See: magnetic island. (09 Oct 1997) |
| ventral surface of digit | The flat of the fingers; the flexor or anterior surface of the fingers. Synonym: facies digitalis ventralis, facies digitalis palmaris, ventral surface of digit. (05 Mar 2000) |
| receptors, cell surface | Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behaviour of the target cell. Cell surface receptors, unlike enzymes, do not chemically alter their ligands. (12 Dec 1998) |