| ADS | acute death syndrome; acute diarrheal syndrome; Alcohol Dependence Scale; alternative delivery syste... |
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| NK | Commission on [Anatomical] Nomenclature [Ger. Nomenklatur Kommission]; natural killer [cell]; neurok... |
| ATC | Anatomical Therapeutic Chemical |
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| adjustable articulator | An articulator which may be adjusted to permit movement of the casts into recorded eccentric relationships, an articulator capable of adjustment to more than one eccentric position. (05 Mar 2000) |
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| arcon articulator | An articulator with the equivalent condylar guides fixed to the upper member and the hinge axis to the lower member, an instrument that maintains a constant relationship between the occlusal plane and the arcon guides at any position of the upper member, thereby making possible more accurate reproductions of mandibular movements. (05 Mar 2000) |
| articulator | <dentistry> A special holder for models of your teeth. The articulator holds the models in the same alignment as your jaw so the orthodontist can look carefully at your bite. (08 Jan 1998) |
| non-arcon articulator | An articulator with the equivalent condylar guides attached to the lower member and the hinge axis to the upper member. (05 Mar 2000) |
| anatomical | <anatomy> Pertaining to anatomy or to the structure of the organism. (18 Nov 1997) |
| anatomical age | The age in terms of structure rather than of function or of passage of time. Synonym: physical age. (05 Mar 2000) |
| anatomical airway | The volume of the conducting airways from the external environment (at the nose and mouth) down to the level at which inspired gas exchanges oxygen and carbon dioxide with pulmonary capillary blood; formerly presumed to extend down to the beginning of alveolar epithelium in the respiratory bronchioles, but more recent evidence indicates that effective gas exchange extends some distance up the thicker-walled conducting airways because of rapid longitudinal mixing. Compare: alveolar dead space, physiologic dead space. Synonym: anatomical airway. (05 Mar 2000) |
| anatomical crown | The portion of a tooth covered with enamel. Synonym: corona dentis, anatomical crown. (05 Mar 2000) |
| anatomical dead space | The volume of the conducting airways from the external environment (at the nose and mouth) down to the level at which inspired gas exchanges oxygen and carbon dioxide with pulmonary capillary blood; formerly presumed to extend down to the beginning of alveolar epithelium in the respiratory bronchioles, but more recent evidence indicates that effective gas exchange extends some distance up the thicker-walled conducting airways because of rapid longitudinal mixing. Compare: alveolar dead space, physiologic dead space. Synonym: anatomical airway. (05 Mar 2000) |
| anatomical element | Any anatomical unit, such as a cell. Synonym: morphologic element. (05 Mar 2000) |
| anatomical neck of humerus | A groove separating the head of the humerus from the tuberosities, giving attachment to the articular capsule. Synonym: collum anatomicum humeri. (05 Mar 2000) |
| anatomical pathology | The subspecialty of pathology that pertains to the gross and microscopic study of organs and tissues removed for biopsy or during postmortem examination, and also the interpretation of the results of such study. Synonym: pathological anatomy. (05 Mar 2000) |
| anatomical position | The erect position of the body with the face directed forward (skull aligned in orbitomeatal or Frankfort plane); the arms at the side and the palms of the hands directed forward; the terms posterior, anterior, lateral, medial, etc., are applied to the parts as they stand related to each other and to the axis of the body when in this position. (05 Mar 2000) |
| anatomical root | That portion of a tooth extending from the cervical line to its apical extremity. (05 Mar 2000) |
| anatomical snuffbox | A hollow seen on the radial aspect of the wrist when the thumb is extended fully; it is bounded by the prominences of the tendon of the extensor pollicis longus posteriorly and of the tendons of the extensor pollicis brevis and abductor pollicis longus anteriorly. The radial artery crosses the floor which is formed by the scaphoid and the trapezium bones. Synonym: tabatiere anatomique. (05 Mar 2000) |
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