ATI RN
100 Questions on the Cardiovascular System PDF Questions
Question 1 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 2 of 5
Diaphragm is supplied by arteries:
Correct Answer: B
Rationale: The diaphragm is supplied by phrenic arteries (B) from the aorta. Coronary (A) supplies the heart, renal (C) the kidneys, and vasa vasorum (D) vessel walls.
Question 3 of 5
Arteries are:
Correct Answer: B
Rationale: Arteries (B) have thick, elastic walls to handle high pressure (~100 mmHg). Veins are thin-walled with low pressure (A, D incorrect), and C contradicts arterial structure.
Question 4 of 5
Increased functional demand on the heart produces increased size of the myocardium by:
Correct Answer: B
Rationale: Chronic demand (e.g., hypertension) causes myocardial hypertrophy (B), increasing cell size. Hyperplasia (A) is rare in adult heart, C and D are pathological.
Question 5 of 5
SA node acts as a pacemaker of the heart because of the fact that it:
Correct Answer: D
Rationale: The SA node (D) fires fastest (~60-100 bpm), outpacing others. A is true but general, B and C are partial (it has both innervations).