A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract. This contraction pushes blood through the tricuspid and mitral valves into the resting lower chambers (the right and left ventricles). This part []
World's First Heartless Human Was Able To Live Without A Pulse
More intense blood pressure control may lower irregular heartbeat risk
New CT Scanner Captures Single Heartbeat, High-definition Images
Education for Professionals
Heart Anatomy The Texas Heart Institute
The Texas Heart Institute Center for Cardiovascular Care
CHRISTUS Louis & Peaches Owen Heart Hospital, Tyler, Texas
THE TEXAS HEART INSTITUTE - 6770 Bertner Ave, Houston, Texas - Hospitals - Phone Number - Yelp
Breaking: Heartbeat Law at Texas Supreme Court Today
The Heart Valves - Texas Heart Institute Heart Information Center
Jak się mierzy tętno? Jakie jest prawidłowe tętno?
Texas Heart Institute School of Perfusion Technology
Heartbeat law protecting the unborn takes effect in Texas - Diocese of Grand Rapids
Texas Heartbeat Law is Now in Effect. Here's What You Need to Know - The Stream