What is absolute and relative refractory period?
Also to know is, what is the relative refractory period?
Medical Definition of relative refractory period : 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 — compare absolute refractory period.
Furthermore, what does absolute refractory period mean? The absolute refractory period refers to a period during the action potential. This is the time during which another stimulus given to the neuron (no matter how strong) will not lead to a second action potential.
Beside this, what causes absolute and relative refractory period?
In summary, inactivation of Na+ channels is solely responsible for the absolute refractory period. Both Na+ channel inactivation and greater than resting pK value are responsible for the relative refractory period.
What is absolute refractory period of heart?
Refractory period of cardiac muscle cells . In cardiac muscle cells , There are absolute and relative refractory periods . Absolute refractory period : is a period during which the cardiac excitability is totally cancelled ( cardiac muscle will not respond to any stimulus) .