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  • ‘Lub’ sound produced during heartbeat is caused by  Option: 1 Ventricular diastole <p

‘Lub’ sound produced during heartbeat is caused by

 

Option: 1

Ventricular diastole

 


Option: 2

Ventricular systole

 


Option: 3

Atrial diastole

 


Option: 4

Atrial systole

 


Answers (1)

best_answer

 

 

 

As we have learnt:

  • The beating of heart produces sounds which can be heard with the help of stethoscope. 
  • There are two major heart sounds designated as S1 and S2,

 

- 

 

  1. First sound S1- The first sound is ‘lubb’. It is a slow pitch sound created by the closure of the tricuspid and bicuspid valves at the beginning of ventricular systole

  2. Second sound S2 - It is a highly pitched and sharper sound called ‘dubb’. This sound is a result of closure of semilunar valves and it marks the end of ventricular systole

Hence, the correct answer is option b.

Posted by

sudhir.kumar

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