| photosynthetic reaction centre, plant | A system consisting of proteins and cofactors which facilitates light energy and electron transfer in plants. (12 Dec 1998) |
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| Wernicke's centre | The region of the cerebral cortex thought to be essential for understanding and formulating coherent, propositional speech; it encompasses a large region of the parietal and temporal lobes near the lateral sulcus of the left cerebral hemisphere; corresponding approximately to Brodmann's areas 40, 39, and 22. Synonym: sensory speech centre, Wernicke's area, Wernicke's field, Wernicke's region, Wernicke's zone. (05 Mar 2000) |
| community mental health centre | A mental health treatment centre located in a neighborhood catchment area close to the homes of patients, introduced in the 1960's via new federal legislation designed to replace the large state hospitals, which usually were located in remote rural areas; features include offering a series of comprehensive services by one or more members of the four mental health professions, provision of continuity of care, participation of consumers in the centres, community location to provide accessibility, a combination of indirect or preventive and direct services, the use of program-centreed as well as case-centreed consultation, a requirement for program evaluation, and various linkages to a variety of health and human services. (05 Mar 2000) |
| motor speech centre | The posterior part of the inferior frontal gyrus of the left or dominant hemisphere, corresponding approximately to Brodmann's area 44; Broca identified this region as an essential component of the motor mechanisms governing articulated speech. Synonym: Broca's area, Broca's field, motor speech centre. (05 Mar 2000) |
| primary centre of ossification | This is the first site where bone begins to form in the shaft of a long bone or in the body of an irregular bone. Synonym: punctum ossificationis primarium, primary point of ossification. (05 Mar 2000) |
| health centre | An institution or group of institutions providing all types of medical care and preventive services to a population. (05 Mar 2000) |
| satiety centre | A term referring to the region of the ventromedial nucleus in the hypothalamus; destruction of this small region in the rat leads to continuous eating and extreme obesity. (05 Mar 2000) |
| secondary centre of ossification | This is the centre of bone formation appearing later than the punctum ossificationis primarium, usually in epiphysis. Synonym: punctum ossificationis secundarium, secondary point of ossification. (05 Mar 2000) |
| semioval 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) |
| sensory speech centre | The region of the cerebral cortex thought to be essential for understanding and formulating coherent, propositional speech; it encompasses a large region of the parietal and temporal lobes near the lateral sulcus of the left cerebral hemisphere; corresponding approximately to Brodmann's areas 40, 39, and 22. Synonym: sensory speech centre, Wernicke's area, Wernicke's field, Wernicke's region, Wernicke's zone. (05 Mar 2000) |
| sphenotic centre | One of the paired centre's of ossification of the sphenoid bone. (05 Mar 2000) |
| national centre for health care technology | A centre in the public health service which coordinates and administers a program of research, demonstrations, and evaluations of medical technologies and assessments of health care technology. (12 Dec 1998) |
| national centre for health statistics | A centre in the public health service which is primarily concerned with the collection, analysis, and dissemination of health statistics on vital events and health activities to reflect the health status of people, health needs, and health resources. (12 Dec 1998) |
| national health planning information centre | A centre in the health resources administration division of planning methods and technology which provides access to current information on health planning and resources development. (12 Dec 1998) |
| dentary centre | A specific ossification centre of the mandible that gives rise to the lower border of its outer plate. (05 Mar 2000) |