How does the respiratory systems uses other system to get it job done? HELP HELP!!!!?

Question

I'm writing an essay about the respiratory systems could you tell me how the respiratory systems uses other systems such as circulatory systems, digestion, etc. I need HELLP!!!! THANK~ YOU SOOOOO MUCH

Answer 1

It uses the muscular system to move the lungs. The respiratory system also provides the blood with oxygen.

Answer 2

Well, the respiratory system transfers the oxygen it gathers to the circulatory system, which distributes the oxygen to the cells all around the body.  You could go on a tangent from there to say that the digestive system provides the power for you to breathe and get oxygen, and for your heart to beat to pump it.  I don't think you could involve the lymphatic system much, and with the skeleton system (I'm not sure of the correct phrasing) all you could weakly say is that it holds the body together and protects the heart, which, by having a functional circulatory system, allows your respiratory system to work.  That is a very weak point to argue, though.  

For the most part, I would just say the circulatory system is the respiratory system's main companion.