| ECETOC | European Centre for Ecotoxicity and Toxicology of Chemicals |
|---|---|
| ECVAM | European Centre for the Validation of Alternative Methods |
| GECC | Government Employees' Clinic Centre |
| MSDC | Mass Spectrometry Data Centre |
| NHS | CCC National Health Service Centre for Coding and Classification [UK] |
| vasomotor centre | Diffuse area of the reticular formation in the lateral medulla containing neurons that control vascular tone; consists of separate vasodepressor and vasopressor areas. (05 Mar 2000) |
|---|---|
| reaction centre | <plant biology> The site in the chloroplast that receives the energy trapped by chlorophyll and accessory pigments and initiates the electron transfer process. A photosynthetic complex containing chlorophyll (or bacteriochlorophyll) and other components, within which occurs the initial electron transfer reactions of photophosphorylation. (09 Oct 1997) |
| catalytic centre | See: active centre. (05 Mar 2000) |
| cell centre | Microtubule organising centre of the cell, the pericentriolar region. (18 Nov 1997) |
| vital centre | Centre essential to life; usually refers to the centres located in the medulla oblongata which are necessary for the maintenance of respiration and circulation. (05 Mar 2000) |
| medullary centre | The great mass of white matter composing the interior of the cerebral hemisphere; the name refers to the general shape of this white core in horizontal sections of the hemisphere. Synonym: centrum medullare, centrum ovale, medullary centre, semioval centre, Vicq d'Azyr's centrum semiovale, Vieussens' centrum. (05 Mar 2000) |
| centre | 1. The middle point of a body; loosely, the interior of a body. A centre of any kind, especially an anatomical centre. 2. A group of nerve cells governing a specific function. Synonym: centrum. Origin: L. Centrum; G. Kentron (05 Mar 2000) |
| centre median de Luys | Synonym: centromedian nucleus. Origin: Fr. (05 Mar 2000) |
| centre of ossification | The site of earliest bone formation via accumulation of osteoblasts within connective tissue (membranous ossification) or of earliest destruction of cartilage prior to onset of ossification (endochondral ossification). Synonym: punctum ossificationis, ossific centre, point of ossification. (05 Mar 2000) |
| centre of ridge | The buccolingual midline of the residual ridge. (05 Mar 2000) |
| centre of rotation | A point or line around which all other points in a body move. See: axis. (05 Mar 2000) |
| respiratory centre | The region in the medulla oblongata concerned with integrating afferent information to determine the signals to the respiratory muscles; the inspiratory and expiratory centre's considered together. (05 Mar 2000) |
| chiral centre | <chemistry> A tetrahedral carbon atom that bears four different substituents. (09 Jan 1998) |
| chondrification centre | A site of earliest cartilage formation in the body. (05 Mar 2000) |
| guiding centre | <radiobiology> Particles placed in a magnetic field will gyrate in circles around the magnetic field lines, and drift in various directions. The guiding centre represents the instantaneous centre of the circular motion. The idea is that you can think of the guiding centre as drifting, and the particle as orbiting the guiding centre. (09 Oct 1997) |