Medically reviewed by Richard N. Fogoros, MD Key Takeaways The right atrium collects deoxygenated blood and sends it to the ...

Ischemic heart disease and heart failure are associated with previously unknown changes in the right atrium of the heart, a new study shows. The groundbreaking study reveals how various forms of heart ...

Heart valves allow blood to flow one way and prevent it from flowing in the wrong direction. The tricuspid valve controls blood flow between the right atrium and right ventricle. The bicuspid or ...

The sinoatrial (SA) node is the natural pacemaker of the heart. It generates electrical impulses that cause the heart’s chambers to contract, setting the heart rate. The SA node typically generates 60 ...