ATI LPN
Questions About the Cardiovascular System Questions
Question 1 of 5
Which statement regarding cardiac "work" is FALSE?
Correct Answer: D
Rationale: The largest drop in energy actually occurs across the arterioles, not the precapillary sphincters.
Question 2 of 5
The visceral serous pericardium is also known as the:
Correct Answer: B
Rationale: The visceral serous pericardium is synonymous with the epicardium, the innermost layer of the pericardium.
Question 3 of 5
What ECG wave accompanies ventricular depolarization?
Correct Answer: B
Rationale: The QRS complex represents ventricular depolarization on an ECG.
Question 4 of 5
Which of the following is NOT true of artery structure and function?
Correct Answer: A
Rationale: Arteries carry blood away from the heart, while veins carry blood toward the heart.
Question 5 of 5
Identify the hormone(s) that will decrease blood volume and thus blood pressure.
Correct Answer: C
Rationale: ANH (atrial natriuretic hormone) promotes sodium and water excretion, reducing blood volume and pressure. ADH and aldosterone increase blood volume.