The Cardiac Electrical System - How the Heart Beats
By Richard N. Fogoros, M.D., About.com Guide
Updated: September 25, 2007
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Figure 3: When the wave of electricity reaches the AV disc, it is stopped, except in the specialized AV conduction system. The solid purple line on the ECG in this figure indicates the PR interval.
Prev
- Introduction to the Cardiac Electrical Signal
- The Components of the Cardiac Electrical Signal
- The Cardiac Electrical Signal Spreads Across the Atria
- The Cardiac Electrical Signal Reaches the AV Node
- The Cardiac Electrical Signal Passes to the Ventricles
- The Cardiac Electrical Signal Spreads Across the Ventricles
Explore Heart Disease
Must Reads
By Category
- Atrial Fibrillation
- Cholesterol, triglycerides
- Coronary Artery Disease
- Drugs for Heart Disease
- Exercise and Heart Disease
- Heart Healthy Diet
- Heart Valve Disease
- High Blood Pressure
- Living With Heart Failure
- Pacemakers & Defibrillators
- Palpitations & Arrhythmias
- Reducing Cardiac Risk
- Surgery, congenital, & more
- Syncope (fainting)
- Women & Heart Disease
About.com Special Features
8 Ways to Cut Drug Costs
Learn how to save money on medications with these recommendations. More >
Healthy Bodies, Healthy Minds
Keep yourself, and your family, happy and healthy this season. More >
Also from About.com:
©2009 About.com, a part of The New York Times Company.
All rights reserved.