THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The air we breathe: three vital respiratory gases and the red blood cell: oxygen, nitric oxide, and carbon dioxide.

Detailed explanation-2: -The majority of the air we breathe is made up of nitrogen and oxygen, though you’ll also find argon, carbon dioxide and other gases in trace amounts.

Detailed explanation-3: -However, breathing in air with such a high percentage of nitrogen is not harmful or toxic to our body, as nitrogen is an inert gas, which means it is unreactive or it does not chemically react with other gases to produce any toxic gaseous compound.