ATI LPN
Cardiovascular Exam Questions Questions
Question 1 of 5
The period between the filling of the ventricles and the opening of the semilunar valves is called:
Correct Answer: B
Rationale: This period is ventricular contraction (systole), where the ventricles contract after filling, building pressure to open the semilunar valves and eject blood.
Question 2 of 5
Which of the following supplies the apex of the heart?
Correct Answer: A
Rationale: The anterior interventricular artery (left anterior descending artery) supplies the apex of the heart.
Question 3 of 5
The core of valves is covered by:
Correct Answer: A
Rationale: The core of heart valves is covered by endocardium, the innermost layer lining the heart.
Question 4 of 5
When pheochromocytoma (tumor of the adrenal medulla) suddenly discharges a massive amount of epinephrine into the circulation, the patient's heart rate would be expected to:
Correct Answer: B
Rationale: Epinephrine directly increases heart rate via its chronotropic effect on the SA node.
Question 5 of 5
Which of the following normally cause the cardiac output curve to shift to the left along the right atrial pressure axis?
Correct Answer: B
Rationale: Severe cardiac tamponade compresses the heart, reducing venous return and shifting the cardiac output curve left.