ATI LPN
NCLEX Cardiovascular Questions Questions
Question 1 of 5
What is a biological action of endothelin?
Correct Answer: D
Rationale: Endothelin evokes positive inotropic and chronotropic effects on the myocardium by acting directly on cardiac muscle cells.
Question 2 of 5
In the heart, valves that ensure one-way flow of blood are found:
Correct Answer: D
Rationale: Valves ensuring one-way blood flow are located between the atria and ventricles (atrioventricular valves) and between the ventricles and arteries (semilunar valves).
Question 3 of 5
Place the layers of the heart and the coverings of the heart in order from the innermost layer to the outermost layer. (Endocardium, Epicardium, Fibrous pericardium, Myocardium, Parietal pericardium)
Correct Answer: B
Rationale: The correct order is Endocardium (1), Myocardium (4), Epicardium (2), Parietal pericardium (5), Fibrous pericardium (3).
Question 4 of 5
The condition in which the AV node fails and the electrical stimulus does not reach the ventricles is called a(an)
Correct Answer: A
Rationale: A heart block occurs when the AV node fails to transmit the signal to the ventricles.
Question 5 of 5
Place the layers of a blood vessel in order from innermost to outermost layer.
Correct Answer: D
Rationale: The correct order of blood vessel layers from innermost to outermost is tunica intima, tunica media, and tunica externa.