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Which one of the following is matching pair?

a)

Lubb                    Sharp closure of AV valves at the beginning of ventricular systole

b)

Dup                      Sudden opening of semilunar valves at the beginning of ventricular 

                                  diastole                                                                                                                                   

c)

Pulsation of the       Valves in the blood vessels

radial artery  

d)

Initiation of the heart beat     Purkinje fibres



Question ID - 3479 | SaraNextGen Top Answer

Which one of the following is matching pair?

a)

Lubb                    Sharp closure of AV valves at the beginning of ventricular systole

b)

Dup                      Sudden opening of semilunar valves at the beginning of ventricular 

                                  diastole                                                                                                                                   

c)

Pulsation of the       Valves in the blood vessels

radial artery  

d)

Initiation of the heart beat     Purkinje fibres

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

First sound of heart is lubb (a long and booming sound), created by the closure of atrio-ventricular valve (AV), tricuspid and bicuspid at the beginning of ventricular systole. At the beginning of ventricular diastole, the semilunar valves close, producing the second sound ‘dup’.

127 votes


127