ATI RN
Cardiovascular System Multiple Choice Questions Questions
Question 1 of 5
Which of the following does NOT contain a nucleus while in the peripheral blood?
Correct Answer: A
Rationale: Erythrocytes (A) are anucleate in circulation.
Question 2 of 5
The hepatic portal system delivers blood from the digestive organs to the
Correct Answer: A
Rationale: The hepatic portal system routes nutrient-rich blood from the gut to the liver (A) for processing.
Question 3 of 5
Which component of the heart conduction system would have the slowest rate of firing?
Correct Answer: A
Rationale: The AV node (A) has the slowest intrinsic rate (~40-60 bpm) to delay impulses, allowing atrial contraction.
Question 4 of 5
The pulmonary trunk and aorta are derived from which primitive heart structure?
Correct Answer: D
Rationale: The truncus arteriosus (D) divides into the pulmonary trunk and aorta during development.
Question 5 of 5
A client with congestive heart disease returns to the clinic with muscle aching. The physician orders a potassium level, which shows hypokalemia. The drug regimen includes furosemide (Lasix) 80 mg b.i.d. In addition to treatment with a potassium supplement, the nurse administers which of the following prescribed drugs?
Correct Answer: C
Rationale: Spironolactone (C), a potassium-sparing diuretic, counters furosemide’s potassium loss. Bumetanide (A) and torsemide (B) are loop diuretics, clonidine (D) is an antihypertensive.