HomeWhat's NewVideosArticlesDownloadsCalendarWeb LinksSite MapO.R. Schedule
USC - University of Southern California Cardiothoracic Surgery at University of Southern California Keck School of Medicine
Department InformationPatient's GuideFaculty & StaffAreas of ExpertiseDiseases & TreatmentsContact Us

Glossary of Terms

SA Node
Also known as the sinus node, the SA node is the natural pacemaker of the heart. It controls the heart rate by generating electrical impulses and then sending electrical signals through the heart muscle, causing the heart to contract and pump blood throughout the body.

The SA Node is located in the right atrium of the heart. It is made up of a group of cells (myocytes) positioned on the wall of the right atrium, at the center of the heart and near the entrance of the superior vena cava. These cells contract at a rate of about 70-80 times per minute, which make up the natural heart beat.

Related terms: AV Node, Atrial Fibrillation, Natural Pacemaker
Share this page: 

 

Find us on Facebook
Featured Areas

Faculty and Staff | Patient's Guide | Areas of Expertise | Diseases & Treatments | Contact Us
Home | What's New | Videos | Articles | Downloads | Calendar | Web Links | Site Map

University of Southern California, 1520 San Pablo Street, HCC2 Suite 4300, Los Angeles, CA 90033
Phone: 323.442.5849     Fax: 323.442.5956
Copyright © USC Cardiothoracic Surgery