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absolute refractory period

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  • absolute refractory period — n the period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied called also absolute refractory phase compare RELATIVE REFRACTORY PERIOD * * * the portion of the refractory… …   Medical dictionary

  • refractory period — n the brief period immediately following the response esp. of a muscle or nerve before it recovers the capacity to make a second response called also refractory phase see ABSOLUTE REFRACTORY PERIOD, RELATIVE REFRACTORY PERIOD * * * (in …   Medical dictionary

  • Refractory period — In physiology, a refractory period is a period of time during which an organ or cell is incapable of repeating a particular action, or (more precisely) the amount of time it takes for an excitable membrane to be ready for a second stimulus once… …   Wikipedia

  • relative refractory period — n the period shortly after the firing of a nerve fiber when partial repolarization has occurred and a greater than normal stimulus can stimulate a second response called also relative refractory phase compare ABSOLUTE REFRACTORY PERIOD * * * the… …   Medical dictionary

  • Effective Refractory Period — During a cardiac cycle, once an action potential is initiated, there is a period of time that a new action potential cannot be initiated. This is termed the effective refractory period (ERP) of the tissue. Cells may or may not be in an absolute… …   Wikipedia

  • effective refractory period — absolute refractory p …   Medical dictionary

  • period — 1. A certain duration or division of time. 2. One of the stages of a disease, e.g., p. of incubation, p. of convalescence. SEE ALSO: stage, phase. 3. Colloquialism for menses. 4. Any of the horizontal rows of chemical elements in the …   Medical dictionary

  • Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere …   Universalium

  • ARP — absolute refractory period; address resolution protocol; American Registry of Pathologists; American Registry of Pathology; anticipated recovery path; apolipoprotein regulatory protein; assay reference plasma; assimilation regulatory protein;… …   Medical dictionary

  • ARP — • absolute refractory period; • address resolution protocol; • American Registry of Pathologists; • American Registry of Pathology; • anticipated recovery path; • apolipoprotein regulatory protein; • assay reference plasma; • assimilation… …   Dictionary of medical acronyms & abbreviations

  • Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …   Wikipedia