Which of the following statements is true with respect to sounds produced during cardiac cycle?

Options

A. The first hear sound (lub) is associated with the closure of semilunar valves
B. The first heart sound (lub) is associated with closure ot tricuspid and bicuspid valves
C. Second heart sound (dub)is associated with closure of bicuspid valves
D. Second heart sound (dub) is associated with closure of tricuspid valves

Answer

B

Explanation

The first heart sound (lub) is associated with closure of tricuspid and bicuspid value.