An ==Key Stage 3=====Meaning===The [[lungs]] are [[organ]] s in the [[Respiratory System|respiratory system]] used to [[transfer]] [[oxygen]] from the [[air]] to the [[blood]] and [[transfer]] [[Carbon Dioxide]] from the [[blood]] to the [[air]].{| class="wikitable"|-|[[File:Lungs.png|center|300px]]|-| style="height:20px; width:200px; text-align:center;" |A computer generated image of the [[lungs]].|} ===About Lungs===: The [[lungs]] are found in the [[thorax]].: The [[lungs]] are protected by the [[Rib Cage|rib cage]].: The [[lungs]] are 100 times easier to inflate than a balloon.: [[Breathing]] in is called inhaling and breathing out is called exhaling.