heartbeat

The “lub” is the sound of these valves closing. hasil hk siang 6d After your ventricles contract to pump blood away from the heart, the aortic and pulmonary valves close and make the “dub” sound. mpo depo 10k bonus 15k Your Heartbeat Your heart beats an average of 60 to 100 beats per minute In that one minute, your heart pumps about five quarts of blood through your arteries