| LOI | level of incompetence; limit of impurities |
|---|---|
| LR | labeled release; laboratory references; laboratory report; labor room; lactated Ringer [solution]; l... |
| OEL | occupational exposure limit |
| PEL | peritoneal exudate lymphocyte; permissible exposure limit |
| REL | rate of energy loss; recommended exposure limit; resting expiratory level |
| central gyri | The precentral and postcentral gyri. Gyri cerebri Gyri of cerebrum, the gyri or convolutions of the cerebral cortex. Cingulate gyrus, a long, curved convolution of the medial surface of the cortical hemisphere, arched over the corpus callosum from which it is separated by the deep sulcus of corpus callosum; together with the parahippocampal gyrus, with which it is continuous behind the corpus callosum, it forms the fornicate gyrus. Synonym: gyrus cinguli, callosal convolution, callosal gyrus, cingulate convolution, falciform lobe, lobus falciformis. (05 Mar 2000) |
|---|---|
| central illumination | axial illumination |
| central implantation | <obstetrics> Implantation in which the blastocyst remains in the uterine cavity, as in carnivores, rhesus monkeys, and rabbits. Synonym: circumferential implantation, superficial implantation. (05 Mar 2000) |
| central incisor | <dentistry> The first tooth in the maxilla and mandible on either side of the midsagittal plane of the head. (05 Mar 2000) |
| central inhibition | <physiology> Suppression or diminution of outgoing impulses from a reflex centre. (05 Mar 2000) |
| central lacteal | The blindly ending lymphatic capillary in the centre of an intestinal villus. (05 Mar 2000) |
| central lateral nucleus of thalamus | The most lateral of the intralaminar nuclei of the thalamus. Synonym: nucleus centralis lateralis thalami. (05 Mar 2000) |
| central line | <equipment> Small, flexible plastic tube inserted into the large vein above the heart, through which drugs and blood products can be given and blood samples withdrawn painlessly. Synonym: central line, Hickman catheter. (12 Jan 1998) |
| central lobule | A division of the superior vermis of the cerebellum between the lingula and the monticulus. Synonym: lobulus centralis cerebelli, central lobule. (05 Mar 2000) |
| central lobule of cerebellum | A division of the superior vermis of the cerebellum between the lingula and the monticulus. Synonym: lobulus centralis cerebelli, central lobule. (05 Mar 2000) |
| central mesenteric lymph nodes | The mesenteric lymph nodes located along the intestinal (jejunal and ileal) branches of the superior mesenteric artery. Synonym: nodi lymphatici superiores centrales, central mesenteric lymph nodes. (05 Mar 2000) |
| central metal ion | <chemistry> The metal ion to which the ligands are attached at the centre of a coordination complex. (09 Oct 1997) |
| central necrosis | Necrosis involving the deeper or inner portions of a tissue, or an organ or its units. (05 Mar 2000) |
| central nervous system | <anatomy, neurology> Pertaining to the brain, cranial nerves and spinal cord. It does not include muscles or peripheral nerves. In invertebrates, the central nervous system is composed of the segmental ganglia of the ventral nerve cord together with the fused ganglia or brain at the anterior end. Acronym: CNS (12 Jan 1998) |
| central nervous system agents | A class of drugs producing both physiological and psychological effects through a variety of mechanisms. They can be divided into "specific" agents, e.g., affecting an identifiable molecular mechanism unique to target cells bearing receptors for that agent, and "non-specific" agents, those producing effects on different target cells and acting by diverse molecular mechanisms. Those with non-specific mechanisms are generally further classed according to whether they produce behavioural depression or stimulation. Those with specific mechanisms are classed by locus of action or specific therapeutic use. (12 Dec 1998) |