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The Respiratory System

Across
Air passage from the throat to the lungs
Push air out of the lungs
A gas that plants need in order to live
A gas that animals need in order to live
Two tubes from the trachea to the lungs
A pair of organs inside the ribcage
Opening through which food is ingested
Down
A dome-shaped muscle that pulls are into lungs
Another word for windpipe
One of the tubes from the trachea to a lung
Pull air into the lungs
Part of the face that has nostrils