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View of the bronchial tubes, terminating in air vesicles. On the left is the external view (1, bronchial tube; 2, air vesicles). On the right is the bronchial tube and air vesicles laid open.

Bronchial Tubes Terminating in Air Vesicles

View of the bronchial tubes, terminating in air vesicles. On the left is the external view (1, bronchial…

The respiratory system. Labels: 1. the larynx; 2. the trachea; 3. right bronchia; 4. left bronchia; 5. left lung divided into three lobes; 7. large bronchial tubes; 8. small bronchial tubes ending in air cells or vesicles.

Respiratory System

The respiratory system. Labels: 1. the larynx; 2. the trachea; 3. right bronchia; 4. left bronchia;…