The Pathway Taken by an Electrical Impulse Through the Heart $\rightarrow$

Multiple Choice

The pathway taken by an electrical impulse through the heart is _______.

A) AV node $\rightarrow$ SA node $\rightarrow$ cardiac muscle of atria $\rightarrow$ AV bundle $\rightarrow$ right or left bundle branch $\rightarrow$ muscle of ventricles
B) SA node $\rightarrow$ cardiac muscle of atria $\rightarrow$ AV node $\rightarrow$ AV bundle right or left bundle branch $\rightarrow$ muscle of ventricles
C) AV bundle $\rightarrow$ AV node $\rightarrow$ muscles of ventricles $\rightarrow$ muscle of atria $\rightarrow$ SA node
D) muscle of atria $\rightarrow$ AV node $\rightarrow$ muscles of ventricles $\rightarrow$ muscle of atria $\rightarrow$ SA node