来自MSN11 个月
Cardiologist explains how pacemakers and defibrillators interact with the electrical system ...
Like any other muscle, the heart becomes stronger with training. Because their heart functions more efficiently, athletes require fewer heart beats overall to circulate blood. The atrioventricular, or ...
BBC4 年
Structure and function of the heart
The impulse is then passed to another node within the heart – the atrioventricular node (AVN). This node is in the lower part of the right atrium.
来自MSN11 个月
How do pacemakers and defibrillators work? A cardiologist explains how they interact with ...
Like any other muscle, the heart becomes stronger with training. Because their heart functions more efficiently, athletes require fewer heart beats overall to circulate blood. The atrioventricular, or ...