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Electrical System of the Heart

The heart's electrical signal travels through pathways (yellow). This stimulates your upper chambers (atria) and lower chambers (ventricles) to contract.

By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer John M. Miller, MD - Electrophysiology
Last Revised November 2, 2010

WebMD Medical Reference from Healthwise

Last Updated: November 02, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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