ATI LPN
100 Questions on the Cardiovascular System Questions
Question 1 of 5
Identify the process that allows for the movement of carbon dioxide between the blood and the tissue fluid.
Correct Answer: B
Rationale: Carbon dioxide moves between blood and tissue fluid primarily via diffusion, driven by concentration gradients.
Question 2 of 5
Which layer of the heart wall consists of cardiac muscle tissue?
Correct Answer: C
Rationale: The myocardium is the muscular layer responsible for heart contraction.
Question 3 of 5
Stimulation of which nerve reduces heart rate?
Correct Answer: D
Rationale: The vagus nerve carries parasympathetic signals that decrease heart rate and cardiac output, promoting relaxation and energy conservation.
Question 4 of 5
Veins always carry deoxygenated blood.
Correct Answer: B
Rationale: Pulmonary veins carry oxygenated blood from lungs to heart, disproving the statement.
Question 5 of 5
The chamber of the heart that normally has the thickest wall is the:
Correct Answer: D
Rationale: The left ventricle has the thickest wall to pump blood into the systemic circulation.