The Respiratory System. Why do astronauts wear space suits and carry oxygen when they go out in space? Why do deep sea divers take oxygen with them on a dive?. The Respiratory System Functions. The respiratory system moves oxygen from the outside environment into the body.
Why do deep sea divers take oxygen with them on a dive?
As air travels from outside, it travels through the nose , pharynx, larynx, trachea and bronchi and bronchioles to the lungs
The alveoli are tiny air sacs in the lungs
animation of gas exchange