5/28/14'
Air$moves$from$nasal$
cavity$through$THROAT'
Pharynx$
Voice$box'
Wind$pipe$>$made$
of$car?lage'
Larynx$
Trachea$
Bronchus$
Main$branch$
that$leads$to$
lungs$(L/R)'
Contains$ALVEOLI$
which$exchanges$
O2$and$CO2'
Lungs$
Diaphragm$
Muscle$at$the$base$of$lungs$
Moves$down$>$inhale$
Moves$up$>$exhale''
'
Alveoli'–'tiny sacs of lung tissue specialized for the
movement of gasses between the air and the blood
1'