Question

Choose the correct answer from the alternatives given.
The heart sound dup is produced when:

• A. mitral valve is opened
• B. mitral valve is closed
• C. tricuspid valve is opened
• D. semilunar valve at the base of aorta gets closed

Answer 1

The correct option is D semilunar valve at the base of aorta gets closed

In a healthy individual, there are two normal heart sounds called lub and dub. Lub is the first heart sound. It is associated with the closure of the tricuspid and bicuspid valves at the beginning of systole. The second heart sound dub is associated with the closure of the semilunar valves at the beginning of diastole.

So, the correct option is 'semilunar valve at the base of aorta gets closed'.