Browse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 Posterior heart arteries The coronary arteries supply blood to the heart muscle. The right coronary artery supplies both the left and the right heart; the left coronary artery supplies the left heart. Review Date: 5/24/2016 Reviewed By: The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.