She was taken to hospital suffering from anirregularheartbeat... 她因心律不齐被送往医院。 柯林斯高阶英语词典 The paint was drying inirregularpatches... 油漆一片片地慢慢变干了。 柯林斯高阶英语词典 He had bad teeth,irregularand discolored. ...
From the SA node, the impulse travels through the AV node (atrial-ventricular node), the "gatekeeper" of impulses, to the lower chambers of the heart (ventricles) via the bundle of His, telling the ventricles it's their turn to beat.The sequence of this electrical event causes the atria ...