ATI RN
Cardiovascular System Questions and Answers 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 by diffusion (B) from high concentration (tissues) to low (blood) across capillaries. Active transport (A), filtration (C), and osmosis (D) don’t apply to gases.
Question 2 of 5
The main systemic arteries branch off of the
Correct Answer: B
Rationale: The aorta (B) is the main systemic artery, branching into all major systemic arteries. Coronary (A), subclavian (C), and carotid (D) are its branches.
Question 3 of 5
Blood supply to heart vessels is by:
Correct Answer: D
Rationale: The heart’s blood supply comes from coronary arteries (not listed), but vasa vasorum (A) supply vessel walls, and coronary flow (C) nourishes the myocardium. D (both A and C) fits best. Vasa nervosum (B) is fictional.
Question 4 of 5
CCU stands for:
Correct Answer: B
Rationale: CCU typically means coronary care unit (B), specialized for heart conditions like MI. A and D are similar but less specific, C is unrelated.
Question 5 of 5
Cardiac output is a measure of:
Correct Answer: D
Rationale: Cardiac output = heart rate × stroke volume (D, ~5 L/min). A, B, and C are incorrect combinations.