Lung Structure and Function

Front

When air enters the lungs, bringing oxygen into the body

Back

Inhalation

Front

When air leaves the lungs, removing carbon dioxide from the body

Back

Exhalation

Front

Also called the windpipe - the tube that carried air from the nose and mouth down towards the lungs

Back

Trachea

Front

Two large tubes branching off from the trachea, one going into each lung

Back

Bronchi

Front

Smaller branches of the bronchi, carrying air deep into the lungs

Back

Bronchioles

Front

Tiny air sacs at the end of bronchioles where gas exchange happens

Back

Alveoli

Front

A dome-shaped muscle under the lungs that moves down when you inhale and up when you exhale

Back

Diaphragm

Front

The gas taken into the lungs during inhalation

Back

Oxygen

Front

The waste product gas exhaled out of the lungs

Back

Carbon Dioxide

Front

Bones that protect the lungs and help with breathing by moving in and out

Back

Ribs