The right atrium is one of the four chambers of the heart. The heart is comprised of two atria and two ventricles. Blood enters the heart through the two atria and exits through the two ventricles.

The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to act as a pump ...

As the central part of the circulatory system, the heart is responsible for pumping blood, supplying oxygen and nutrients, and removing metabolic waste such as carbon dioxide from all the tissues in ...

The heart has four chambers that contract and relax in a specific rhythm to oxygenate blood and pump it throughout the body. The heart’s electrical system coordinates muscle contractions to maintain a ...

New research findings from the University Medical Center Göttingen (UMG) show that both atria undergo profound changes in cases of persistent atrial fibrillation. Until now, the left atrium was ...

Structural or functional abnormalities within the heart's left atrium, with or without symptoms, may increase a person's risk of developing dementia later in life by 35%, according to new research ...