| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
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| ARC | AIDS Related Complex; AIDS °ü·Ã º¹ÇÕ |
| ARC | accelerating rate calorimetry; acquired immunodeficiency syndrome-related complex; active renin conc... |
| ARC-ST | Accreditation Review Council for Educational Programs in Surgical Technology |
| SAM | S-adenosyl-L-methionine; scanning acoustic microscope; senescence accelerated mouse; sex arousal mec... |
| UP | Unipolar |
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| UBC | unipolar brush cell |
| ARC | Adult rat cardiomyocytes |
| ARC | American Red Cross |
| ARC | Anomalous retinal correspondence |
| unipolar arc | <radiobiology> Arc between a metal surface and a plasma in contact with it. Such an arc requires only one electrode and is maintained by the thermal energy of the electrons. (09 Oct 1997) |
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| unipolar | 1. <physics> Having, or acting by means of, one pole only. 2. <anatomy> Having but one pole or process; applied to those ganglionic nerve cells which have but one radiating process; opposed to multipolar. <physics> Unipolar induction, the simulation sometimes produced when one electrode of an induction apparatus is applied to a nerve. Synonym: unipolar induction action. Origin: Uni- + polar. Source: Websters Dictionary (01 Mar 1998) |
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| unipolar cell | A neuron whose cell body emits a single axonal process resulting from the fusion of two polar processes during development; at a variable distance from the cell body, the process divides into a peripheral axon branch extending outward as a peripheral afferent (sensory) nerve fibre, and a central axon branch that enters into synaptic contact with neuron's in the spinal cord or brainstem. With the single known exception of the neuron's composing the mesencephalic nucleus of the trigeminus, unipolar neuron's are the exclusive neural elements of the sensory ganglia. The lack of dendritic processes of these primary sensory neuron's is only apparent: the dendritic pole of the unipolar neuron is represented by the unmyelinated terminal ramifications of the peripheral axon branch. Synonym: pseudounipolar cell, pseudounipolar neuron, unipolar cell. (05 Mar 2000) |
| unipolar electrocardiogram | An electrocardiogram taken with the exploring electrode placed on the chest overlying the heart or upon a single limb, the indifferent ("zero" potential) electrode being the central terminal. (05 Mar 2000) |
| unipolar leads | Those in which the exploring electrode is on the chest in the vicinity of the heart or on one of the limbs, while the other or indifferent electrode is the central terminal. (05 Mar 2000) |
| unipolar neuron | A neuron whose cell body emits a single axonal process resulting from the fusion of two polar processes during development; at a variable distance from the cell body, the process divides into a peripheral axon branch extending outward as a peripheral afferent (sensory) nerve fibre, and a central axon branch that enters into synaptic contact with neuron's in the spinal cord or brainstem. With the single known exception of the neuron's composing the mesencephalic nucleus of the trigeminus, unipolar neuron's are the exclusive neural elements of the sensory ganglia. The lack of dendritic processes of these primary sensory neuron's is only apparent: the dendritic pole of the unipolar neuron is represented by the unmyelinated terminal ramifications of the peripheral axon branch. Synonym: pseudounipolar cell, pseudounipolar neuron, unipolar cell. (05 Mar 2000) |
| ARC | A stage before AIDS, with symptoms such as swollen lymph glands, long-lasting night sweats, fevers and unusual weight loss. Also commonly called symptomatic HIV infection. This term is no longer officially recognised by the CDC. (09 Oct 1997) |
| arc-flash conjunctivitis | Acute keratoconjunctivitis resulting from exposure to intense ultraviolet irradiation. Synonym: actinic conjunctivitis, arc-flash conjunctivitis, flash keratoconjunctivitis, ophthalmia nivalis, snow conjunctivitis, welder's conjunctivitis. (05 Mar 2000) |
| arc of buehler | <radiology> Persistent embryologic anastomosis between coeliac artery and superior mesenteric artery (12 Dec 1998) |
| arc of riolan | <radiology> Inconstant anastomotic artery between middle and left colic aa. (12 Dec 1998) |
| arc perimeter | A perimeter consisting of a saemicircular frame at the centre of which the patient looks while a white object is moving along the arc, the exact point where it becomes visible or invisible being noted and recorded on a chart. (05 Mar 2000) |
| auricular arc | A line carried over the cranium from the centre of one external auditory meatus to that of the other. Synonym: interauricular arc. (05 Mar 2000) |
| bois d'arc | <botany> The Osage orange (Maclura aurantiaca). "The bois d'arc seems to be the characteristic growth of the black prairies." (U. S. Census (1880)) Origin: F, bow wood. So called because used for bows by the Western Indians. Source: Websters Dictionary (01 Mar 1998) |
| bregmatolambdoid arc | The line running along the sagittal suture from the bregma to the apex of the lambdoid suture. (05 Mar 2000) |
| reflex arc | The route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ. (05 Mar 2000) |
| mercury arc | An electric discharge through mercury vapor between electrodes, one of which is usually mercury; provides a rich source of therapeutic ultraviolet rays; the containing tube is usually quartz; may also be glass with a fluorite window. (05 Mar 2000) |
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