| 1. | The bronchioles change diameter to either increase or reduce air flow.
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| 2. | The bronchioles have no cartilage and are surrounded instead by smooth muscle.
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| 3. | The diameter of the bronchioles plays an important role in air flow.
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| 4. | These cells may secrete glycosaminoglycans to protect the bronchiole lining.
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| 5. | In human anatomy, respiratory bronchioles exist proximal to the alveolar ducts.
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| 6. | The term " bronchiolitis " generally refers to inflammation of the bronchioles.
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| 7. | The bronchi branch off into smaller sections inside the lungs, called bronchioles.
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| 8. | Lung tissue distal to a completely obstructed bronchiole often does not become infected.
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| 9. | However, infection is common in lungs distal to a partially obstructed bronchiole.
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| 10. | Organized bronchiole created with MagPen " ! and Bio-Assembler " !.
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