Septum, interatrial

View the Heart Disease Slideshow

Medical Definition of Septum, interatrial

Septum, interatrial: The wall separating the upper chambers (the atria) of the heart. A hole in the interatrial septum is termed an atrial septal defect (ASD).

Quick GuideHeart Disease: Causes of a Heart Attack

Heart Disease: Causes of a Heart Attack

Subscribe to MedicineNet's Heart Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Reviewed on 7/1/2016

Health Solutions From Our Sponsors