Question

Heart sound 'dub' is caused due to closing of ______.

Options

• valve

• tricuspid valve

• semilunar valve

• None of the above

Answer 1

Heart sound 'dub' is caused due to closing of tricuspid valve.

Explanation:

The heart's various valve closures result in a variety of distinctive noises known as "lub-dub sounds." The heart's first sound is called the lub sound. The heart's semilunar valves closing causes the dub sound, which is the second sound heard as the heart beats.