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Biology
IVpical ‘lub-dub’ sounds heard in heart beat are due to
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Q. IVpical ‘lub-dub’ sounds heard in heart beat are due to
Body Fluids and Circulation
A
Closing of bicuspid and tricuspid valves
19%
B
Closing of semilunar valves
10%
C
Blood under pressure through aorta
10%
D
Closure of bicuspid—tricuspid valves followed by semilunar valves
61%
Solution:
Typical ‘lub-dub’ sounds heard in heart beat are due to closure of bicuspid-tricuspid valves followed by semilunar valves