Foundations and Adult Health Nursing Test Bank - Physical Assessment Related

Review Foundations and Adult Health Nursing Test Bank - Physical Assessment related questions and content

Auscultating the heart sounds should result in a "lub-dup" sound when using the bell and the diaphragm of the stethoscope. What causes the "lub" sound?

  • A. Opening of the AV valves
  • B. Opening of the semilunar valves
  • C. Closing of the AV valves
  • D. Closing of the semilunar valves
Correct Answer: C

Rationale: The 'lub-dup' sound of the heart is caused by the closing of the AV and semilunar valves, respectively.