ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 of 5
During which of the following periods does the largest volume of blood enter the arteries?
Correct Answer: D
Rationale: Ventricular systole (D) ejects the largest volume into arteries (~70 ml/beat). Diastole (A, B) fills chambers, atrial systole (C) adds ~20% to ventricular filling.
Question 2 of 5
Another name for the left AV valve
Correct Answer: B
Rationale: The left AV valve is the mitral valve (B), also called bicuspid. Tricuspid (A) is right AV, pulmonary (C) and aortic (D) are semilunar.
Question 3 of 5
Contraction of vascular muscle that increases resistance to blood flow
Correct Answer: B
Rationale: Vasoconstriction (B) contracts vascular muscle, increasing resistance. Vasodilation (A) decreases it, others (C, D) are cardiac terms.
Question 4 of 5
Ferritin is a protein used to
Correct Answer: B
Rationale: Ferritin (B) stores iron in the liver and other tissues. Transferrin (A) transports iron, oxidation (C) and synthesis (D) are incorrect.
Question 5 of 5
What blood type is a person if their plasma contains only anti-A agglutinin?
Correct Answer: B
Rationale: Type B (B) has anti-A antibodies, no A antigen. Type A (A) has anti-B, O (C) has both, AB (D) has neither.