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1. What is the advantage of the larynx, trachea, and bronchi being cartilaginous? List in order,...

1. What is the advantage of the larynx, trachea, and bronchi being cartilaginous? List in order, the spaces that a molecule of air would travel through during inspiration.
Science   Anatomy-And-Physiology   
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The specific cartilagenous rings are present in the upper respiratory tract; larynx (voice box), trachea (windpipe), and in primary bronchi of lungs, because they prevent them to be collapsed due to pressure difference happens during the inspiration and exhalation of air when passing through.

The correct order of structures (larynx, trachea, and bronchi) when air passed through them during inspiration:-

1. Larynx (or voice box)

2. Trachea (windpipe)

3. Bronchi of lungs

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