The epiglottis prevents food and water from entering the .
The contains special cells that filter air.
Air mainly enters the body through the .
Identify the structures labeled in the diagram to the right. Label A
Label B
The are enclosed in a membrane called the pleura.
The are branch-like extensions found in the lower respiratory system.
Identify the structures labeled in the diagram to the right. Label A
In the 1930s, medical journal articles linked asbestos to cancer.
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