ATI RN
Cardiovascular System Practice Questions Questions
Question 1 of 5
The element in hemoglobin that allows oxygen to be transported is:
Correct Answer: C
Rationale: Iron (C) in heme binds oxygen.
Question 2 of 5
Called the universal recipient; has both A and B antigens and no antibodies
Correct Answer: C
Rationale: Type AB (C) has A/B antigens, no antibodies, accepting all types.
Question 3 of 5
Another name for red bone marrow
Correct Answer: B
Rationale: Red bone marrow is myeloid tissue (B), site of hematopoiesis.
Question 4 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 5 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.