respiration is oxidizing process & gaseous exchange by oxidation process..
respiration is two types ..
(1)aerobic respiration (oxygen in presence respiration)
(2)anerobic respiration (oxygen in abscence respiration)
in case of human respiration aerobic respiration
 mechanism of respiration is a mean of maximizing the process of gaseous exchange.
 the movement of the air into the out of the lens is carried out by creating a pressure gradient between the lungs And Atmosphere.
 this is achieved by the moment of wall muscle ribs and diaphragm
 autonomic all set up of these organs in the Taarak have changed sharing the volume of therapeutic process
 does mechanism breathing is