ATI RN
Cardiovascular System Questions and Answers Questions
Question 1 of 5
Identify the heart valve that is also called the mitral valve.
Correct Answer: B
Rationale: The bicuspid valve (B), between the left atrium and ventricle, is also called the mitral valve. Aortic (A) and pulmonary (C) are semilunar valves, and tricuspid (D) is on the right side.
Question 2 of 5
Which of the following does NOT influence heart rate?
Correct Answer: D
Rationale: All listed factors influence heart rate (D): temperature (A) via metabolism, emotions (B) via autonomic input, and venous return (C) via preload and Bainbridge reflex.
Question 3 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 4 of 5
In response to a decrease in blood pressure, heart rate will ___ and the arterioles will ___
Correct Answer: D
Rationale: Low BP triggers sympathetic activation: heart rate increases and arterioles constrict (D) to raise BP. A, B, C would lower BP further.
Question 5 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.