ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
Which of the following is NOT a major function of the blood?
Correct Answer: D
Rationale: Blood transports oxygen (A), regulates pH (B), and protects against disease (C), but does not produce oxygen (D); that occurs in the lungs.
Question 2 of 5
Which of the following formed elements found in the blood are derived from reticulocytes?
Correct Answer: B
Rationale: Erythrocytes (B) mature from reticulocytes after losing nuclei. Others derive from different lineages.
Question 3 of 5
A normal adult red blood cell count ranges from:
Correct Answer: A
Rationale: Normal RBC count is 4.8-5.5 million/mm³ (A) in adults.
Question 4 of 5
In clot formation, prothrombin is converted to:
Correct Answer: C
Rationale: Prothrombin becomes thrombin (C), which converts fibrinogen to fibrin.
Question 5 of 5
Which is not a formed element of the blood?
Correct Answer: A
Rationale: Albumin (A) is a plasma protein, not a formed element (cells/fragments).