action potential

action potential

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factors affecting the formation of action potential; 1) selective permeability of the cell membrane to ions. 2) the cell membrane does not pass the negatively charged heavy molecules inside the cell. 3) electrical, chemical, thermal, optical, mechanical, magnetic etc. of the cell. being excitable by effects. 4) change in the permeability of the membrane of the stimulated cell to ions. 5) presence of active transport in addition to passive transport in the cell membrane.


in the action potential of the heart, the potassium channels in phase 1 are called transient outward potassium channels. these channels are the fastest known potassium channels in humans. that is, the fastest potassium transition occurs in phase1 and the slowest potassium transition occurs in phase2. (phase2 is the plateau phase.) i-type calcium channels are responsible for depolarization in all pacemaker cells. the longest refractory period in the heart is in the purkinje fibers.


activable latent power. *