Functions of Respiratory System Organs

Front

Nose

Back

Filters, warms, and moistens air as it is inhaled.

Front

Mouth

Back

Serves as an alternative entry and exit for air.

Front

Pharynx

Back

Passageway for air from the nose and mouth

Front

Trachea

Back

passageway for air

Front

Lungs

Back

Main organs of the respiratory system where gas exchange occurs.

Front

Bronchi Tubes

Back

tubes that branch off of the trachea and carry air into the lungs

Front

Bronchioles

Back

Smaller branches of the bronchi that lead to the alveoli.

Front

Alveoli

Back

Tiny air sacs where oxygen and carbon dioxide are exchanged.

Front

Diaphragm

Back

Muscle that contracts and relaxes to push air in and out of the lungs

Front

Cilia

Back

Tiny hair-like structures filter air.