Conduction System of the heart and Electrocardiography

Thanks for the photos Jesica!

Cardiac Chambers and Cycle

Cardiac Conduction System

1- Sinoatrial (SA) node- pacemaker
2- Atrioventricular (AV) node
3- AV bundle- Bundle of His
4- Bundle Branches
5- Perkinje Fibers


Cardiac Cycle

P Wave- Atrial depolarization
P-Q Interval- Atrial systole
QRS Complex- Ventricular depolarization begins after Apex
S-T segment- Ventricular Systole
Q-T Interval- Ventricular depolarization through repolarization

Tachycardia and Bradycardia

ECG/ EKG rhythm info

EKG/ECG Pictorial