| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
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| MECTA | mobile electroconvulsive therapy apparatus |
| MJA | mechanical joint apparatus |
| NUMA | nuclear mitotic apparatus |
| pH-stat | apparatus for maintaining the pH of a solution |
| Barcroft-Warburg apparatus | An apparatus for measuring the oxygen consumption of incubated tissue slices by manometric measurement of changes in gas pressure produced by oxygen absorption in an enclosed flask. Synonym: Barcroft-Warburg apparatus. (05 Mar 2000) |
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| Beckmann's apparatus | Apparatus for the accurate measurement of melting points and boiling points in connection with molecular weight determinations. (05 Mar 2000) |
| Benedict-Roth apparatus | <apparatus, physiology> A device employed to measure the amount of oxygen utilised in quiet breathing in the basal state for the estimation of the basal metabolic rate; the subject rebreathes oxygen through soda lime from a recording spirometer. (14 Aug 2000) |
| branchial apparatus | The aggregate of the pharyngeal arches, pouches, clefts, and membranes seen in the developing embryo of vertebrates. (05 Mar 2000) |
| Van Slyke apparatus | An apparatus for determining the amounts of respiratory gases in the blood. (05 Mar 2000) |
| genitourinary apparatus | The organs concerned in the production and excretion of urine, together with the organs of reproduction. (12 Dec 1998) |
| masticatory apparatus | The organs and structures primarily functioning in mastication: the jaws, teeth with their supporting structures, temporomandibular joint, muscles of mastication, tongue, lips, cheeks, and oral mucosa. Synonym: dental apparatus, masticatory apparatus. (05 Mar 2000) |
| vestibular apparatus | <anatomy> The receptor organ of the vestibular portion of the 8th cranial nerve, consisting of the three saemicircular canals and the otolith, located within the petrous portion of the temporal bone of the skull. (05 Mar 2000) |
| central apparatus | The centrosome and centrosphere. (05 Mar 2000) |
| respiratory apparatus | The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs. (12 Dec 1998) |
| Golgi apparatus | <cell biology> Intracellular stack of membrane bounded vesicles in which glycosylation and packaging of secreted proteins takes place. Part of the GERL complex. Synonym: Golgi body, Golgi vesicles, dictyosome (in plants), parabasal body (in flagellate protozoa). (11 Jan 1998) |
| mental apparatus | Mental structure consisting of thoughts, feelings, cognitions, and memories; in psychoanalysis, the topographic structure of the mind. (05 Mar 2000) |
| chromatic apparatus | The deeply staining mass of chromosomes in a dividing cell. (05 Mar 2000) |
| chromidial apparatus | The aggregate of extranuclear network, irregular strands, and masses of basophilic staining material permeating the protoplasm of the cell. See: ribosome, endoplasmic reticulum. (05 Mar 2000) |
| Roughton-Scholander apparatus | A syringe-like device for analyzing the respiratory gases in a small sample of blood. Synonym: Roughton-Scholander syringe. (05 Mar 2000) |