Write the path of air passage in respiratory system.
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Respiratory System:
Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
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nasal cavities (or oral cavity) ---- pharynx ---- trachea ----primary bronchi (right and left) ---- secondary bronchi ---- tertiary bronchi --- bronchioles ---- alveoli
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