What makes the heart beat
Answers
Answered by
3
The atria and ventricles work together, alternately contracting and relaxing to pump blood through your heart. The electrical system of your heart is the power source that makes this possible. ... The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node.
Answered by
5
The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles. The SA node sets the rate and rhythm of your heartbeat.
# $¡nu
Attachments:
Similar questions