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Explain the process of breathing in man.

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Breathing in Humans has two processes 

1) Inhalation 

2) Exhalation 


  • Inhalation is the process of taking oxygen. During this process, ribs come out and diaphragm moves down.
  • This increases the volume of the lungs and decreases the pressure.
  • This will make the air move towards the lungs.


  • Exhalation is a process of throwing out carbon-dioxide. 
  • During this process, ribs go down and diaphragm moves up. 
  • This decreases the volume of the lungs and increases the pressure. 
  • As a result air moves out of the lungs.

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