Now Playing: Your Heart's Electrical Pathways
Loading...
Advertisement
Video Text
Your heart is only able to beat because it produces electricity that travels through your heart muscle. Normally, these electrical signals come from an area in your heart called the SA node or the main pacemaker. This is the SA node at work. In a normal situation, the electrical signals cause the upper parts of the heart to beat together. This pushes blood into the lower parts of the heart. Then, as the electrical signals continue through the heart, the lower chambers contract to push the blood out of the heart. Notice how this is a smooth process that results in heartbeats that happen at a controlled or regular rate and rhythm.
eMedTV Links
Copyright © 2006-2019 Clinaero, Inc.

eMedTV serves only as an informational resource. This site does not dispense medical advice or advice of any kind. Site users seeking medical advice about their specific situation should consult with their own physician. Click Terms of Use for more information.

This site complies with the HONcode standard for trustworthy health information:
verify here.