<P> 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 it returns to its resting state following an excitation . It most commonly refers to electrically excitable muscle cells or neurons . Absolute refractory period corresponds to depolarization and repolarization , whereas relative refractory period corresponds to hyperpolarization . </P>
<P> 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 it returns to its resting state following an excitation . It most commonly refers to electrically excitable muscle cells or neurons . Absolute refractory period corresponds to depolarization and repolarization , whereas relative refractory period corresponds to hyperpolarization . </P>
the absolute refractory period in cardiac muscle cells is
the absolute refractory period in cardiac muscle cells is
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 it returns to its resting state following an excitation .
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 it returns to its resting state following an excitation .