Anatomical term for the upper chambers of the heart. Used in medical and biological contexts.
The atria are the upper chambers of the heart.
Atrial fibrillation is a type of arrhythmia.
right atrium
left atrium
atrial fibrillation
atrial septal defect; ASD
Compound of 心 (heart) and 房 (chamber), directly corresponding to the anatomical concept.