Lizzie asks…human heart?where is the heartbeat initiated in the human heart, and over what path does the electrical excitation flow?admin answers:Heartbeat is initiated in the sino-atrial (SA) node, which is close to where the superior vena cava enters the right atrium, and the electrical impulse travels throught the atria, causing atrial contraction.
It then passes to the atio-ventricular (AV) node, (near the tricuspid valve) where it is delayed for 0.1ms to ensure that all the blood from
No comments:
Post a Comment