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Tardigrade
Question
Biology
The second heart sound (dubb) is associated with the closure of
Q. The second heart sound (dubb) is associated with the closure of
2258
182
Body Fluids and Circulation
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A
tricuspid valve
2%
B
semilunar valves
91%
C
bicuspid valve
3%
D
tricuspid and bicuspid valves
5%
Solution:
During beginning of ventricular diastole the ventricles relax and the semilunar valves are closed. This causes the second heart sound (dubb).