Question

What path does a molecule of o2 take from the nose to the respiratory surface? pharynx → larynx → trachea → bronchus → bronchiole → alveolus larynx → pharynx → trachea → bronchus → bronchiole → alveolus pharynx → larynx → bronchus → bronchiole → alveolus → trachea pharynx → larynx → trachea → bronchiole → bronchus → alveolus?

Answer 1

Answer: Nose → Larynx → Trachea → Bronchus → Bronchiole → Alveolus

Answer 2

The respiratory pathway describes the movement of oxygen molecule from the nose across various organs to get to its final destination which is the respiratory surface.

The path a molecule of o2 take from the nose to the respiratory surface is

Nose --- pharynx → larynx → trachea → bronchus → bronchiole → alveolus.

• As the larynx is located just below the pharynx, the next organ after the nose becomes the pharynx.
• This then follows through to the trachea and then downwards till it gets to the required destination which is the respiratory surface.

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