Question

State whether the following statements are true or false.
The first heart sound results from a closure of semilunar valves.

• A. True
• B. False

Answer 1

The correct option is B False

Heart sounds are noises generated by the closing and opening of the heart valves. 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 'False'.