Excitation-Contraction Coupling in Cardiac Muscle

To physically coordinate the contraction of individual cardiac myocytes (correct)

To generate the cardiac action potential

To modulate calcium-induced calcium release in cardiac muscle

To support the flow of depolarization through the conducting pathway

Gap junctions

Ion currents

Desmosomes

The contractile apparatus (correct)

To coordinate heart function through the electrically synchronized activity of myocytes

To regulate the flow of depolarization through the conducting pathway

To adjust the force of muscle contraction based on the amount of calcium available (correct)

To generate an action potential in pacemaker cells

<p>Sodium and potassium currents</p> Signup and view all the answers

<p>Cardiac cells have a longer refractory period than skeletal muscle cells</p> Signup and view all the answers

<p>To serve as a pacemaker by generating the electrical impulses for heart contraction</p> Signup and view all the answers