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The main airway that is given its rigid structure by the cartilaginous rings that surround it is called the ____________.

Why is it important for this structure to not be soft and super flexible?

Respuesta :

Answer:

The trachea is a rigid tube about 4.5 inches long and 1 inch wide. ... The bronchi also contain C-shaped cartilage rings like the trachea. Deeper in the lungs, each bronchus divides into secondary and tertiary bronchi, which continue to branch to smaller airways called the bronchioles.

Explanation:

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