ATI LPN
Cardiovascular Questions and Answers PDF Questions
Question 1 of 5
Foetal circulation, which is TRUE?
Correct Answer: C
Rationale: Blood in the umbilical veins is highly oxygenated, being approximately 80% saturated with O2.
Question 2 of 5
Which of the following is NOT true of the heart's functions?
Correct Answer: C
Rationale: The heart does not mix oxygen-poor and oxygen-rich blood; this is prevented by its structure, including the septum.
Question 3 of 5
List the components of the cardiac conduction system in the correct sequence for impulse transmission.
Correct Answer: C
Rationale: The sequence is SA node (initiates impulse), AV node, AV bundle, then Purkinje fibers.
Question 4 of 5
Identify the structures blood will flow through as blood flows from the left ventricle.
Correct Answer: B
Rationale: Blood flows sequentially from the left ventricle into arteries, then arterioles, capillaries, venules, and finally veins.
Question 5 of 5
The vasomotor center that controls the diameter of blood vessels is located in the
Correct Answer: A
Rationale: The vasomotor center, which regulates blood vessel diameter and vascular tone, is located in the medulla oblongata.