Front

Pharynx

Back

Cavity (space) in the back of the nose and mouth, connected to the esophagus

Front

Epiglottis

Back

A flap (fold) of cartilage at the base of the tongue which covers the windpipe (airway) when swallowing

Front

Larynx

Back

Muscular air passage to the lungs that holds the vocal cords; also called the voice box

Front

Trachea

Back

Airway with C-shaped cartilage from the larynx to the bronchi; also known as the windpipe

Front

Bronchus / Bronchi

Back

Air passage to the lungs that splits from the trachea

Front

Lungs

Back

Organ within the chest that gives oxygen to the body and removes carbon dioxide

Front

Bronchioles

Back

Small branches of tubes within the lungs

Front

Alveolus / Alveoli

Back

Tiny air sacs within the lungs that allow for gas exchange

Front

Diaphragm

Back

Dome-shaped muscle between the chest and abdomen that plays an important role in breathing; contraction increases air volume in the chest