Physics, 31.01.2020 07:04 jennainglish
Your heart has four valves. normally, these valves open to let blood flow through your heart, and then shut to keep it from flowing backward. sometimes the valves don't work properly, causing some or all of the following disorders. in regurgitation, blood leaks back through the valve in the wrong direction. in valve prolapse, the valves have "floppy" flaps and don't close tightly. it's one of the most common heart valve conditions. sometimes it causes regurgitation. in stenosis, the valve doesn't open enough and blocks blood flow. based on your knowledge of the heart, explain how regurgitation, valve prolapse, and stenosis each adversely affects blood flow and the oxygenation of body tissues.
Answers: 3
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Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
Your heart has four valves. normally, these valves open to let blood flow through your heart, and th...
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