Respiratory System

Question 1

What are the main components of the upper airway?

Answer 1

Nose, pharynx, larynx – warm, filter, and humidify air.

Question 2

What structures make up the lower airway?

Answer 2

Trachea → bronchi → bronchioles → alveoli (gas exchange).

Question 3

What is the function of the diaphragm?

Answer 3

Primary breathing muscle; contracts to increase thoracic volume during inhalation.

Question 4

What do intercostal muscles do?

Answer 4

Elevate and depress ribs to assist breathing.