KCET · BIOLOGY · STD 11 - 15. Body Fluids and Circulation
The typical 'lub-dub' sounds heard during heartbeat are produced due to
- A Closure of semilunar valves
- B Closure of bicuspid and tricuspid valves
- C Closure of bicuspid and tricuspid valves followed by semilunar valves
- D Opening of bicuspid and tricuspid valves followed by semilunar valves
Answer & Solution
Correct Answer
(C) Closure of bicuspid and tricuspid valves followed by semilunar valves
Step-by-step Solution
Detailed explanation
(C) Closure of bicuspid and tricuspid valves followed by semilunar valves,
The first sound 'lub' is heard with the closure of tricuspid and bicuspid valve and second sound 'dub' is heard with the closure of semilunar valve.
The first sound 'lub' is heard with the closure of tricuspid and bicuspid valve and second sound 'dub' is heard with the closure of semilunar valve.
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