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  •  On average, a healthy human breathes  Option: 1 12-16 times/minute  <

 On average, a healthy human breathes

 

Option: 1

12-16 times/minute

 


Option: 2

19-20 times/minute

 


Option: 3

9-10 times/minute

 


Option: 4

22-23 times/minute

 


Answers (1)

best_answer

 

 

Mechanism of Breathing: Expiration -

  • Expiration takes place when the intrapulmonary pressure is higher than the atmospheric pressure.
  • Relaxation of the diaphragm and the intercostal muscles returns the diaphragm and sternum to their normal positions and reduce the thoracic volume and thereby the pulmonary volume.
  • This leads to an increase in intrapulmonary pressure to slightly above the atmospheric pressure causing the expulsion of air from the lungs, i.e., expiration
  • We have the ability to increase the strength of inspiration and expiration with the help of additional muscles in the abdomen. 
  • On average, a healthy human breathes 12-16 times/minute.  

 

Thus, on average, a healthy human breathes 12-16 times/minute. Thus, correct option is a. 12-16 times/minute

Posted by

Ajit Kumar Dubey

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