HN320 Lecture Notes - Pulmonary Valve, Mitral Valve, Aortic Stenosis
Document Summary
Bi217 lecture: the anatomy and physiology of the human heart. With multicellular organisms oxygen could not longer diffuse through to all the cells of the body, insufficient for the inner cells. Because of this, it was essential to produce a circulatory system. As animals got bigger, the amount of oxygen necessary at the surface increases to. In harvey"s equation r squared is the radius ensure that the innermost cells receive sufficient oxygen. The typical resting heart beat is roughly 60 beats per minute. 3. 2x107 beats per year for the average heart x 70 years = 2. 2 2. 6 billion times in a. In a typical year 5. 26x105 min/year lifetime. Volume: average cardiac output (sum of the heart rate x the volume of blood pumped per beat) = about 5l of blood per minute. 5l x 5. 26x105 minutes/year = 2. 6 -3. 0 million liters of blood pumped per year.
