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...

n.心房，心耳，内耳窝，（古罗马建筑的）前室...

Atria的音标：Atria的英式发音音标为：['eɪtrɪə]Atria的美式发音音标为：['eɪtrɪr]...