It comes from your mouth and nose.
Respiratory system
The respiratory system in the human body uses oxygen to produce energy through a process called cellular respiration.
The respiratory system in the human body uses oxygen to produce energy through a process called cellular respiration.
Respiratory system
Respiration
The man body uses the highest amount of oxygen in the lungs, where oxygen is taken in from the air we breathe and is transferred to the bloodstream for distribution to the body's tissues and organs.
Carbon,Hydrogen and Oxygen
Air is mainly a mix of oxygen and nitrogen. Oxygen is the part your body uses- the good stuff.
The brain consumes 40% of the oxygen in your blood.
Four major uses for water by the body are: to carry nutrients and oxygen to cells, to regulate body temperature, to lubricate joints, and to moisten tissues.
C02 (Carbon Dioxide)
Just like the rest of your body, the brain needs a good supply of oxygen to function properly - in fact, it uses around 20% of the oxygen in your entire body