Primary bronchi, terminal bronchioles, tertiary bronchi, initial bronchioles, trachea.How many of the above structures are supported by complete cartilaginous rings?0435
Question
Primary bronchi, terminal bronchioles, tertiary bronchi, initial bronchioles, trachea.How many of the above structures are supported by complete cartilaginous rings?0435
Solution
The trachea is the only structure among those listed that is supported by complete cartilaginous rings. The primary, secondary (not listed), and tertiary bronchi have cartilaginous plates or irregular rings, not complete rings. The bronchioles (both terminal and initial) do not have any cartilage at all. So, the answer is 1.
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