Auscultating the Heart Sounds Should Result in a "Lubb-Dupp" Sound

question 48

Multiple Choice

Auscultating the heart sounds should result in a "lubb-dupp" sound when using the bell and the diaphragm of the stethoscope.The "lubb" sound is caused by the:

• A) opening of the AV valves.
• B) opening of the semilunar valves.
• C) closing of the AV valves.
• D) closing of the semilunar valves.

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