Front

*Front:* Human respiratory system

Back

that help us breathe

Front

*Front:* Main organ of respiration

Back

Lungs

Front

*Front:* Function of lungs

Back

oxygen and carbon dioxide

Front

*Front:* Pathway of air

Back

trachea, bronchi, lungs

Front

*Front:* Importance of respiration

Back

oxygen to body cells

Front

*Front:* Diaphragm role

Back

lungs expand and contract

Front

*Front:* Bronchi function

Back

air to lungs

Front

*Front:* Alveoli

Back

air sacs for gas exchange

Front

*Front:* Oxygen's role in body

Back

for energy production

Front

*Front:* Carbon dioxide removal

Back

as waste gas