What is the respiratory system? How it works?

Yesterday for Inquiry I worked with Hajera and Joel. Me and Joel made the video of how the respiratory system works because Hajera was late. Me and Joel got help from Mrs Linda because me and Joel was confused of how the respiratory works. We watched videos of how it works which helped us write it down. 

Link to my DLO- https://docs.google.com/drawings/d/1NLWUEtvCFJWjJk4nK1r6Xo1183WFN_XxjDwJd6nl-XM/edit