The Thorax

The neck

The abdomen

The chest

The ribs form a protective cage around the lungs.

The back and chest muscles cushion the lungs from damage.

The pleural fluid surrounding the lungs protects them from injury.

A sheet of muscle known as the diaphragm separates the thorax from the abdomen.

The lungs are suspended within pleural fluid, housed between two pleural membranes.

The lungs rest on top of the stomach and liver, so they don't drop into the abdomen.

Helps to warm the air in the lungs upon inhalation during cold weather.

Acts as lubrication so the lungs don't stick to the thorax walls.

Provides a moist surface for efficient gaseous exchange.

24

6

12

True

False

Alveoli $\rightarrow$ trachea $\rightarrow$ bronchi $\rightarrow$ bronchioles

Bronchi $\rightarrow$ trachea $\rightarrow$ alveoli $\rightarrow$ bronchioles

Trachea $\rightarrow$ bronchi $\rightarrow$ bronchioles $\rightarrow$ alveoli

Trachea $\rightarrow$ alveoli $\rightarrow$ bronchi $\rightarrow$ bronchioles