Body Fluids and CirculationHard
Question
′Dop′ sound is produced during closure of
Options
A.semilunar valves
B.bicuspid valve
C.tricuspid valve
D.Both (b) and (c)
Solution
The period between the end of one heart beat to the end of next heart beat is called cardiac cycle. Cardiac cycle is formed of three phases. Atrial systole, ventricular systole and joint diastole.
During ventricular systole closing of auriculoventricular valves at the start of ventricular systole produces first heart sound called ″lubb″ or systolic sound.
During joint diastole rapid closure of semilunar valves at the beginning of ventricular diastole
produces the second heart sound called ″dup″.
During ventricular systole closing of auriculoventricular valves at the start of ventricular systole produces first heart sound called ″lubb″ or systolic sound.
During joint diastole rapid closure of semilunar valves at the beginning of ventricular diastole
produces the second heart sound called ″dup″.
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