How does the duration of the refractory period in cardiac muscle cells compare to that in skeletal muscle cells?
A) it is longer in cardiac muscle cells
B) it is shorter in cardiac muscle cells
C) it is the same in cardiac and skeletal muscle cells
D) cardiac cells have no refractory period

Question

Quizplus · Accepted Answer

The refractory period in cardiac muscle cells is longer than that in skeletal muscle cells. This is because the action potential in cardiac cells is longer and more sustained, and the refractory period helps to prevent tetanic contractions that could interfere with the proper function of the heart.

How Does the Duration of the Refractory Period in Cardiac