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Question
The sound produced by the heart beat is well known as:
The sound produced by the heart beat is well known as:
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Solution
The correct option is B Lub-Dub
The first sound “LUBB” is produced when the atrioventricular (tricuspid and bicuspid) valves get closed sharply at the start of ventricular systole. The second sound “DUP” is produced when at the beginning of ventricular diastole, the semilunar valves at the roots of the aorta and pulmonary artery get closed.
The first sound “LUBB” is produced when the atrioventricular (tricuspid and bicuspid) valves get closed sharply at the start of ventricular systole. The second sound “DUP” is produced when at the beginning of ventricular diastole, the semilunar valves at the roots of the aorta and pulmonary artery get closed.
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