The Exam HiveTEAS and HESI Prep

About Respiratory System

Understand how the diaphragm’s contraction expands the chest cavity, lowering lung pressure to allow air intake, and initiate inhalation in the respiratory system.

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Respiratory System HESI A2 Practice Questions

Free Respiratory System practice questions for the HESI A2 exam with detailed rationales.

Question 1 of 2

What happens when the diaphragm contracts?
The chest cavity expands, causing inhalation.
Oxygen is exchanged for carbon dioxide in the alveoli.
The epiglottis closes to prevent food from entering the trachea.
The lungs deflate and air is forced out.