ATI RN
Cardiovascular System Practice Questions Questions
Question 1 of 5
A person with no antigens on the red blood cell would have which blood type?
Correct Answer: D
Rationale: Type O (D) lacks A/B antigens.
Question 2 of 5
Another name for red bone marrow
Correct Answer: B
Rationale: Red bone marrow is myeloid tissue (B), site of hematopoiesis.
Question 3 of 5
Vascular spasm, the first mechanism activated to decrease blood loss, is caused by
Correct Answer: D
Rationale: Vascular spasm (D) involves muscle damage (A), platelet factors (B), and pain reflexes (C).
Question 4 of 5
In a blood pressure measurement of 110/70, the number 70 is the
Correct Answer: B
Rationale: In 110/70 mmHg, 70 is diastolic pressure (B), measured during ventricular relaxation. Systolic (A) is 110, pulse pressure (C) is 110-70=40, mean arterial pressure (D) is ~83.
Question 5 of 5
Blood islands are
Correct Answer: D
Rationale: Blood islands (D) in the yolk sac form early vessels and blood cells in the embryo.