Abeka Biology quiz 16 Latest Update Graded A
What is the muscular layer of the heart ? myocardium What is the flow of blood from the digestive organs to the liver called ? portal circulation What is the heart's natural pacemaker ? sinoatrial node What is an abnormal rushing or blowing sound produced by valve damage ? heart murmur What type of heart failure occurs when the heart stops beating and instead twitches randomly ? ventricular fibrillation What is the contracting and pumping phase of the cardiac cycle
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