Which of the Following is Most Related to "Lubb" (Of

Question

Which of the following is most related to "lubb" (of the lubb-dupp duo)?
A) Called S1
B) Caused by the closure of the AV valves
C) Occurs in response to ventricular contraction
D) All of the above

Accepted Answer

The "lubb" sound is the S1 heart sound, which is caused by the closure of the AV valves in response to ventricular contraction. Therefore, all of the given options (A, B, and C) are related to the "lubb" sound.