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05-04-2024
Health

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Which one of the following is a correct matching pair?
A. Lubb - Sharp closure of AV valves at the beginning of ventricular systole
B. Purkinje fibers - Initiation of the heart beat
C. Dup - Sudden opening of semilunar valves at the beginning of ventricular diastole
D. Pulsation of the radial artery - Valves in the blood vessels

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