1、Conclusion The left atrium enlargement is related to atrial fibrillation.
結論左心房增大與心房顫動有密切關系。

2、The left atrium takes in Blood from the pulmonary veins and sends it into the systemic circulation.
心臟左側從肺靜脈接獲血液，并將之送至體循環(huán)。

3、From the left atrium the blood passes through the bicuspid valve into the left ventricle.
來自左心房的血液通過二尖瓣進入右心室。

4、From the left atrium the blood passes through the bicuspid valve into the right ventricle.
來自左心房的血液通過二尖瓣進入右心室。