[Closure of bicuspid-tricu...] Typical 'lubb-dup' sounds heard in heart beat are due to

For Competitive Exams

Typical 'lubb-dup' sounds heard in heart beat are due to

Closing of bicuspid and tricuspid valves

closing of semilunar valves

Blood under pressure through aorta

Closure of bicuspid-tricuspid valves followed by semilunar valves

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