Contraction of the cardiac muscle of the heart is initiated and controlled by an electrical stimulus called the cardiac action potential. It is a small (∼0.1 V) and transient (0.15–3.0 s) change of voltage across the cell membrane. This change in voltage results from the passage ...
Jesse Eisenberg stars as the meek yet wise Columbus, whose rules to survival have kept him safe since outbreak day went from potential hookup to self-defensive homicide. Joining him on a rowdy road trip through a ravaged USA are hard-hitting Tallahassee (Woody Harrelson), sassy Little Rock (...
Ventricular action potential relates to an electrical event in the heart's ventricles. Most action potentials occur due to a stimulus, or triggering event. This can come in the form of an external force or an internal initiation. This usually causes a sequence of complex events, involving ionic...
'Gray' vs. 'Grey': What is the difference? What's the difference between 'fascism' and 'socialism'? More Commonly Misspelled Words Popular in Wordplay See All Terroir, Oenophile, & Magnum: Ten Words About Wine 8 Words with Fascinating Histories ...
Action potential, the brief (about one-thousandth of a second) reversal of electric polarization of the membrane of a nerve cell (neuron) or muscle cell. In the neuron an action potential produces the nerve impulse, and in the muscle cell it produces the
摘要: A process is provided for preventing or ameliorating arrhythmia by administering to mammals, including man, an effective dose of d-sotalol to lengthen the action potential duration of cardiac cell without blockade of beta-adrenergic receptor sites....
No alterations in the magnitude and voltage dependence of inward rectifier ( I Kl ) were found around the resting membrane potential. The diabetes-related suppression of I to explains the decreased repolarization rate of action potentials. 展开 ...
The time course of this change is similar to that of the action potential duration in ventricle following a change in stimulation frequency. These changes of the e.c.g. are probably not due to slow alterations of neural or hormonal factors extrinsic to the heart. In the whole heart, the ...
Popular in Grammar & Usage See All Point of View: It's Personal Plural and Possessive Names: A Guide What's the difference between 'fascism' and 'socialism'? More Commonly Misspelled Words Words You Always Have to Look Up Popular in Wordplay ...
Summary Two features characterize the propagation of the action potential: how fast it propagates, i.e., conduction velocity; and how fast it recovers and accepts new impulses, i.e., refractory period. An arrhythmia may result from the following mechanisms: reentry; increased automaticity; and ...