Respiratory system
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Pharynx
...
Trachea
a tube that carries air from the larynx to the lungs
Alveoli
group of tiny air sacs
Lung
respiratory organ;takes in and releases air
Diaphragm
sheet of muscle located between the chest and the abdomen
Bronchi
the two branches of the trachea
inhale
to breathe in
exhale
to breathe out
Carbon Dioxide
waste product given off in the gas exchange between air and blood in the alveoli