1. Before the air enters the trachea, it must pass through the _________________
(a) alveoli
(b) bronchi
(c) pharynx
(d) bronchioles

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Solution

(c) pharynx

Pharynx is also called the throat. It is a common passage for food and air. Inhaled air passes from the nasal cavities to the trachea through the pharynx.

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Similar questions

Where in the respiratory system does oxygen, from the air breathed in pass into the blood.

Option 1 : trachea

Option 2 :bronchi

Option 3 : bronchioles

OpOpti 4 : alveoli

During respiration, the exchange of gases takes place in :
(a) bronchi
(b) alveoli
(c) bronchioles
(d) trachea

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