Which of the following begins the electrical pulse which sta

Which of the following begins the electrical pulse which starts the heart\'s beat? Systole Sinoatrial Node Atrioventricular Node Electrocardiogram Bundle of HIS

Solution

The impluse starts in a small bubble of specialized cells rotated in the right atrium called the S A node .The electrical activity spreads through the wall of atria and causes them to contract .This forces blood into the ventricles.The SA node sets the rate and rhythm of your heart beat.