Action potential

Synonyms nerve impulse, excitation potential, spike, excitation wave, action potential, electrical excitation Definition The action potential is a short change of the membrane potential of a cell from its rest potential. It is used to transmit electrical excitation and is therefore elementary for the transmission of stimuli. Physiology To understand the action potential, one must … Action potential

Action potential at the heart | Action potential

Action potential at the heart The basis of electrical excitation of the heart is the so-called action potential. It represents the biologically temporally limited change of an electrical voltage across the cell membrane, which ends in a muscle action, in this case the heartbeat. With a duration of about 200 to 400 milliseconds depending on … Action potential at the heart | Action potential