Annotated illustration of diseased human alveoli. The alveoli are air sacs in the lungs, at the ends of the bronchioles, that allow the exchange of ca Stock Photo - Alamy
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Anatomy of the Respiratory System | University Hospitals
Diagram the Pulmonary Alveolus Air Sacs in the Lung. Stock Vector - Illustration of health, bronchi: 130471417
Breathing - KS3 Flashcards | Quizlet
Air sacs hi-res stock photography and images - Alamy