ATI LPN
NCLEX Cardiovascular Questions Questions
Question 1 of 5
Which statement is TRUE regarding cardiac muscle?
Correct Answer: B
Rationale: Cardiac muscle fibres are smaller than skeletal muscle fibres.
Question 2 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 3 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 4 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.
Question 5 of 5
Identify the hormone(s) that will increase blood volume and thus blood pressure.
Correct Answer: B
Rationale: ADH (antidiuretic hormone) increases water reabsorption, and aldosterone increases sodium reabsorption, both increasing blood volume and pressure. ANH (atrial natriuretic hormone) decreases blood volume.