ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 of 5
The first sound of the heart beat results from
Correct Answer: B
Rationale: The first heart sound ('lub') is caused by the closing of the AV valves at the start of ventricular systole.
Question 2 of 5
Identify the factors that affect peripheral resistance.
Correct Answer: A
Rationale: Peripheral resistance is primarily influenced by arterial diameter and length, as well as blood viscosity.
Question 3 of 5
What vessels deliver oxygen rich blood to the legs?
Correct Answer: A
Rationale: The external iliac arteries supply oxygenated blood to the legs.
Question 4 of 5
Contraction of the ventricles of the heart leads to blood moving directly
Correct Answer: A
Rationale: During ventricular contraction (systole), blood is ejected out of the heart into arteries. The atrioventricular valves close to prevent backflow into the atria.
Question 5 of 5
What is the function of the foramen ovale during fetal life?
Correct Answer: A
Rationale: The foramen ovale allows oxygenated blood from the placenta to bypass the non-functional fetal lungs by flowing directly from the right atrium to the left atrium.