ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 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 2 of 5
The ductus arteriosus allows fetal blood to bypass the nonfunctioning fetal liver.
Correct Answer: B
Rationale: The ductus arteriosus connects the pulmonary artery to the aorta, bypassing the nonfunctional fetal lungs.
Question 3 of 5
Smooth muscle in blood vessels is located in the:
Correct Answer: C
Rationale: The tunica media contains smooth muscle, enabling vessel constriction and dilation.
Question 4 of 5
If damaged, which valve could allow blood to leak back into the left ventricle?
Correct Answer: C
Rationale: If the aortic semilunar valve is damaged, blood may leak back into the left ventricle.
Question 5 of 5
The greatest resistance to blood flow occurs in the:
Correct Answer: B
Rationale: Arterioles provide the greatest resistance to blood flow due to their small diameter and muscular walls.