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inhale

to breathe in oxygen and other gases

exhale

to breathe out carbon dioxide and other gases

oxygen

what every cell in the body needs in order to live and function

brain

controls how you breathe

involuntary breathing

automatic breathing

voluntary breathing

breathing that you think about and control for a short time

diaphragm

the strong curved muscle attached below the lungs to the lower ribs and backbone

chest muscles and diaphragm

change the space and pressure inside your body to allow you to breathe

the respiratory system

our breathing system

cells use

oxygen

cells produce

carbon dioxide

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