Cardiac Cycle Problem

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Part 2 Quiz

Part 1 Quiz

 

 

A man has a diastolic heart murmur. The AV valves are open during diastole, but if they are stenotic they will not open all the way, so blood is forced through with a hissing sound - a diastolic murmur.

The semilunar valves should be closed during diastole. If they are regurgitant, you will hear blood leak through them and it will cause a murmur. Will you hear this murmur after the first heart sound or the second?

Choose your answer from the links to the right.

first

second

AV valves are open during diastole
if they don't open all the way, you'll hear a murmur
semilunar valves are shut during diastole. If they leak, you will hear a murmur.