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to breathe in oxygen and other gases


to breathe out carbon dioxide and other gases


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


controls how you breathe

involuntary breathing

automatic breathing

voluntary breathing

breathing that you think about and control for a short time


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 tube that leads from the pharynx to the stomach


the flap of tissue that covers the trachea to keep food out of the lungs

vocal chords

the two small bands of elastic tissue that stretch across the inside of the larynx


tiny hairs in the nose that filter air




windpipe; the tube that leads to the lungs


the voice box; contains the vocal chords

affects pitch

thickness and length of the vocal chords

the respiratory system

our breathing system

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