Atrium (heart)

The atrium () or auricle is the upper part through which blood enters the ventricles of the heart. 

There are two atria in the human heart. The left atrium receives blood from the pulmonary (lung) circulation. The right atrium receives blood from the venae cavae (venous circulation).



Related pages
 Atrial syncytium
 Left atrial volume


References

Category:Heart
Category:Anatomy of the cardiovascular system
Category:Cardiovascular system