Breathing Rate


 
 
Concept Explanation
 

Breathing Rate

Breathing Rate: The number of times a person breathes in one minute is known as his breathing rate. A normal human being breathes in 15-20 times per minute. While running or doing heavy physical work, the breathing may increase up to 26 breaths per minute. This is because we require extra energy.

Stethoscope :  The heartbeat can be heard by an instrument called stethoscope.It is used by doctors to amplify the sound of heart. It consists of : 

  • i) A chest piece that carries a sensitive diaphargm 
  • ii) Two ear pieces
  • iii) A tube joining both the parts
  • Doctor get to know about the condition if heart by listening the sound through a stethoscope.   

                                                   

                                                                Stethoscope

    Sample Questions
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    Question : 1

    During running or doing heavy physical work, the breathing may increase up to _____________  breaths per minute.

    Right Option : C
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    Explanation
    Question : 2

    An adult human being breathes in and out for _______________ times in a minute.

    Right Option : A
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    Explanation
    Question : 3

     The heartbeat can be heard by an instrument called _______________ .

    Right Option : A
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    Explanation
     
     
     


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