ATI LPN
NCLEX Cardiovascular Questions Questions
Question 1 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 2 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.
Question 3 of 5
One function of the pericardial sac is protection against friction.
Correct Answer: A
Rationale: The pericardial sac contains fluid to reduce friction between the heart and surrounding structures during movement.
Question 4 of 5
Which of the following is another name for the visceral layer of the pericardium?
Correct Answer: B
Rationale: The visceral pericardium is also called the epicardium, adhering to the heart's surface.
Question 5 of 5
As the external iliac artery enters the thigh, its name changes to the:
Correct Answer: B
Rationale: The external iliac becomes the femoral artery in the thigh.