CNA Certified Nursing Assistant Exam Practice Test

Free 5-question sample test with instant feedback. See how ready you are.

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Sample Questions

Question 1

What is the primary function of the cardiovascular system?

Answer: To pump blood throughout the body, delivering oxygen and nutrients to cells while removing carbon dioxide and waste products.

Question 2

Which chamber of the heart pumps oxygenated blood to the entire body?

Answer: The left ventricle pumps oxygenated blood out through the aorta to the rest of the body.

Question 3

What is the difference between arteries and veins?

Answer: Arteries carry blood away from the heart, while veins carry blood back toward the heart.

Question 4

What is the normal resting heart rate range for an adult?

Answer: 60 to 100 beats per minute is the normal resting heart rate for a healthy adult.

Question 5

What do red blood cells primarily transport throughout the body?

Answer: Red blood cells primarily transport oxygen from the lungs to body tissues using the protein hemoglobin.