HEART CONDUCTION SYSTEM

SA node

Pacemaker of the heart

AV bundle

AKA the atrioventricular bundle

AV node

AKA the atrioventricular node

AV bundle

AKA the bundle of His

SA node

AKA the sinoatrial node

Purkinje Fibers

carry impulses through the ventricles and cause them to contract

AV node

causes a delay in the conduction of the heart, allowing the atria to fully empty and close their valves

Bundle Branches

consists of a left and right side

SA node

generates electrical impulses every 60- 100 seconds

AV node

located between the atria and ventricles

SA node

located within the right atrial wall

Purkinje Fibers

long cells that spread through ventricular muscle tissue

SA node

passes the impulse to the AV node

AV bundle

send impulses to the bundle branches

Bundle branches

send impulses to the Purkinje fibers

AV node

sends impulses to the AV bundle

SA node

triggers the atria to contract