What is the second heart sound (dub) associated with?

What is the second heart sound (dub) associated with?
  1. The closure of the tricuspid and bicuspid valves
  2. The closure of the semilunar valves
  3. The opening of the tricuspid and bicuspid valves
  4. The opening of the semilunar valves

Solution

The second heart sound (dub) is associated with the closure of the semilunar valves.

Asked in: NCERT

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