Functionally, those atria are the receiving chambers for the blood coming back to the heart after circulating through the body.

从功能上讲，这些心房是血液在身体循环后返回心脏的接收室。

The upper receiving chambers of the heart are the atria. The lower pumping chambers are the ventricles.

室间隔将两心室分开，房间隔将两心房分开。

Because they are primarily receiving chambers, we do not think of the atria as the true pumps of the heart.

因为它们主要是接收腔，所以我们不认为心房是心脏的真正泵。

Remember: The ventricles of the heart create very high pressure, while the atria, or the receiving chambers of the heart, have very little pressure, at least while the body's at rest.

心脏的心室产生非常高的压力，而心房或心脏的接收室压力很小，至少在身体休息时是这样。