ATI RN
100 Questions on the Cardiovascular System Questions
Question 1 of 5
Which of the following is NOT true of atherosclerosis?
Correct Answer: D
Rationale: Atherosclerosis is caused by endothelial injury (D is false), leading to plaque formation. Smoking (A), insulin-dependent diabetes mellitus (C), and possibly H. pylori (B, via inflammation) are risk factors.
Question 2 of 5
Place the layers of a blood vessel in order from innermost to outermost layer.
Correct Answer: D
Rationale: Blood vessel layers from innermost to outermost are: tunica intima, tunica media, tunica externa (D). A, B, C reverse or misorder the sequence.
Question 3 of 5
Identify the factors that affect peripheral resistance.
Correct Answer: A
Rationale: Peripheral resistance depends on arterial diameter (major), length, and blood viscosity (A). Cardiac output (B), HR/SV (C), and venous factors (D) influence BP, not resistance directly.
Question 4 of 5
Identify the blood vessel that is generally used to determine blood pressure with a sphygmomanometer.
Correct Answer: C
Rationale: The brachial artery (C) in the upper arm is used with a sphygmomanometer (cuff) to measure BP. Radial (A) is for pulse, subclavian (B) is deep, and carotid (D) is in the neck.
Question 5 of 5
Identify the vessel that transports oxygen rich blood to the fetus.
Correct Answer: D
Rationale: The umbilical vein (D) carries oxygen-rich blood from the placenta to the fetus. Umbilical arteries (C) return deoxygenated blood, ductus arteriosus (A) and venosus (B) are shunts.