Which of the following branches of trachea is supported by cartilaginous rings?

Terminal bronchioles.

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Tertiary bronchi.

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Alveoli.

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Bronchioles

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Solution

The correct option is B Tertiary bronchi.
Trachea or windpipe is supported by C -shaped cartilaginous rings on the ventral side. The trachea further branches into primary bronchi, secondary bronchi, tertiary bronchi, bronchioles, finally into terminal bronchioles which give rise to the alveoli. The branching upto tertiary bronchi is supported by C - shaped cartilaginous rings.
So, the correct answer is ‘Tertiary bronchi’

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