ATI LPN
NCLEX Cardiovascular Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Which of the following terms identifies the anatomical region found between the lungs that extends from the sternum to the vertebral column and from the first rib to the diaphragm?
Correct Answer: D
Rationale: The mediastinum is the central region between the lungs, containing the heart and other structures.
Question 5 of 5
In comparison to skeletal muscle fibers, the contractile fibers of the heart are depolarized for_____ period of time.
Correct Answer: B
Rationale: Cardiac muscle cells remain depolarized for a longer period due to the plateau phase of the action potential, which helps sustain contraction and prevent tetanus.