Dubb sound by heart is made due to:
Correct answer: C. Closing of semilunar valves
- A. Closing of A V valves
- B. Opening of A V valves
- C. Closing of semilunar valves
- D. Opening of semilunar valves
Explanation
The closure of the semilunar valves is associated with the second heart sound, which is also known as the dub. The semilunar valves are located at the base of the heart, where the heart's chambers connect to the aorta and pulmonary artery.
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