First slide

Human Respiratory System

Question

Select the correct path of the passage of air through the human respiratory tract.

Moderate

A

Primary bronchiole → secondary bronchus → alveolar duct → alveolus
B

Larynx → pharynx → trachea → bronchus → alveolus
C

Secondary bronchus → primary bronchiole → terminal bronchiole → alveolus
D

External nostril → pharynx → trachea → larynx → bronchus

Solution

External nostril → nasal chamber → internal nostril → pharynx → glottis → larynx → trachea → primary bronchus → secondary bronchus → tertiary bronchus → primary bronchiole → secondary bronchiole → tertiary bronchiole → terminal bronchiole → respiratory bronchiole → alveolar duct → alveolar sac → alveolus.

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