ATI RN
100 Questions on the Cardiovascular System PDF Questions
Question 1 of 5
A heart murmur is due to
Correct Answer: A
Rationale: A heart murmur is caused by turbulent blood flow from leaky (incompetent) or stenotic valves (A). Cardiac arrest (B) stops the heart, normal valve action (C) doesn’t cause murmurs, and extra beats (D) are arrhythmias, not murmurs.
Question 2 of 5
The muscular layer of the blood vessel wall is the
Correct Answer: B
Rationale: The tunica media (B) is the muscular layer, containing smooth muscle for vasoconstriction/dilation. Tunica externa/adventitia (A, C) is connective tissue, tunica interna (D) is endothelium.
Question 3 of 5
A measure of the arterial blood pressure over time is the
Correct Answer: A
Rationale: Mean arterial pressure (MAP, A) averages arterial BP over time (MAP = diastolic + 1/3 pulse pressure). Stroke volume (B) is volume, resistance (C) is a factor, and pulse pressure (D) is systolic-diastolic.
Question 4 of 5
Two of the more common pulse points are the:
Correct Answer: A
Rationale: Common pulse points are the carotid (neck) and radial (wrist) arteries (A). Ulnar (B, D) is less common, and jugular (C) is a vein, not an artery.
Question 5 of 5
Blood from the stomach and intestines is transported to the liver by the:
Correct Answer: C
Rationale: The hepatic portal vein (C) carries nutrient-rich, oxygen-poor blood from the GI tract to the liver. Hepatic artery (B) supplies oxygen, aorta (A) is systemic, renal (D) is kidneys.