What is Inhalation?
'''Inhalation''' is half of what occurs when people or animals [[breathe]]. Air is moved from the outside through the [[respiratory system]] into the [[lung]]s. The lungs take out some [[oxygen]] and put it into the [[blood]]. [[Drug]]s can also be inhaled with an [[inhaler]] to put them into the blood. The air is then moved out of the lungs again. This is the other half of breathing, called [[exhalation]]. {{biology-stub}} [[Category:Respiratory system]]