Atria例句

Both atria are thinwalled muscular chambers.
两心房是由薄壁构成的空腔.

Yet on maximal vagal stimulation, both atria and ventricles come to a standstill.
然而,以最大刺激作用于迷走神经时, 心房和心室都停搏.

The combined contraction of the atria and ventricles is a heartbeat.
心房和心室的这一系列动作合称为一次心跳.