EasyZoologyBreathing and Exchange of Gases
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Which of the following is the correct order of the respiratory tract in humans?
A
Nasal cavity → Pharynx → Trachea → Larynx → Bronchi
B
Nasal cavity → Pharynx → Larynx → Trachea → Bronchi
C
Nasal cavity → Larynx → Pharynx → Bronchi → Trachea
D
Nasal cavity → Trachea → Larynx → Pharynx → Bronchi
Explanation
The correct order of the human respiratory tract is: Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli. The larynx (voice box) lies between the pharynx and trachea and is guarded by the epiglottis, which prevents food from entering the respiratory tract during swallowing.
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