BackMark the following statements as true or false. If a statement is false, correct it to make a true statement.
The repolarization phase of the contractile cell is due to the potassium ions rushing into the cell through potassium ion channels.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Open sodium ion channels cause hyperpolarization in pacemaker cells, which triggers HCN channels to open and begins a new action potential.
What are the effects of the plateau phase of the contractile cell action potential?
An experimental toxin makes the refractory period of cardiac muscle cells equal in length to that of skeletal muscle fibers. Predict the consequences of this toxin.