HESI A2 Exam Prep

Ace the HESI A2 exam with practice questions and mock tests.

Back to topics

Human Body Systems

Practice questions for Human Body Systems in the HESI A2 exam.

Question 2 of 5

What is the primary role of the alveoli in the respiratory system?

To regulate airflow through the bronchioles

To produce mucus that traps pathogens

To facilitate gas exchange between air and blood

To filter air entering the lungs

Submit your answer to see the rationale