registered respiratory therapist
Last updated 4 years ago
Maxwell Quick Medical Reference, ISBN 978-0-9645191-4-5
The electrical impulse moves through the heart as it contracts between 60 to 140 times a minute, depending on age of person. The contractions of ventricles represents a single heartbeat. Atria contraction is a little faster then the ventricles so the blood empties into the ventricle before their contraction.