| 21. | Surrounding these in the trachea and bronchi are cartilage rings, which help to maintain stability.
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| 22. | A number of smaller airways known as the bronchi ( both potentially causing respiratory failure ).
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| 23. | He discovered in 1812 that the actual source for a deep and pleasant trachea and bronchi.
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| 24. | The doctor finds out that Toundi's ribs are broken and have punctured his bronchi.
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| 25. | Lymphoid nodules form at the point of attachment of the worms in the bronchi and trachea.
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| 26. | Postganglionic parasympathetic fibers will release acetylcholine causing the constriction of the smooth muscle layer surrounding the bronchi.
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| 27. | They may occur along the membranous part of the trachea, the main bronchi, or both.
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| 28. | The bronchi in the conducting zone are reinforced with hyaline cartilage in order to hold open the airways.
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| 29. | In humans, the trachea divides into the two main bronchi that enter the roots of the lungs.
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| 30. | The bronchi continue to divide within the lung, and after multiple divisions, give rise to bronchioles.
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