Which of the following statements about the mammalian heart is not correct?
A) Heart murmurs are sounds resulting from a defective left ventricle.
B) The "lub" sound results from closing of the atrioventricular valves.
C) The "lub" sound marks the beginning of systole.
D) The "dup" sound results from closing of the aortic and pulmonary valves.
E) A sphygmomanometer can be used to measure blood pressure changes associated with the cardiac cycle.
Correct Answer:
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