Respiratory 2.on

• - it is controlled by chemoreceptors in your medulla oblongata that detects the change in your bloods co2  and o2 levels. 
• - breathing is primarily controlled by Co2 levels not O2 levels

They are activated by cellular respiration or the high build up of Co2 levels

This is when alveoli rupture because they are over inflated that leads to a less surface area

Carbonic anyhydrase