Exchange, To give something and get something back, System, A group of parts that work together, Inhale, To take air into your lungs, Exhale, To push air out of your lungs, Lungs, Two organs in the chest that help us breathe, Red Blood Cells, Tiny cells in the blood that carry oxygen around the body, Rib Cage, The bones around your chest that protect the lungs and heart, Breathe, To take air into your lungs and let it out again, Mouth, The opening on the face used for eating, drinking, and breathing, Throat, The passage inside the neck that air and food go through, in, Meaning “inside”, ex, Meaning “out”

Breathing system

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