The correct sequence in the conduction system of the heart is
A)Purkinje fibers,AV bundle,bundle branches.
B)AV node,SA node,Purkinje fibers.
C)SA node,AV node,AV bundle,bundle branches,Purkinje fibers.
D)AV node,bundle branches,SA node,Purkinje fibers.

Question

Quizplus · Accepted Answer

The correct sequence in the conduction system of the heart is SA node, AV node, AV bundle, bundle branches, and Purkinje fibers. This is the correct sequence of electrical impulses in the heart, which begins with the SA node (the pacemaker of the heart) and then spreads to the AV node, which delays the impulse momentarily to allow for proper ventricular filling. The impulse then travels through the AV bundle, bundle branches, and finally, the Purkinje fibers, which spread the impulse quickly throughout the ventricles, causing them to contract. Therefore, option C is the correct choice.

The Correct Sequence in the Conduction System of the Heart