ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
Heart chamber that pushes blood through the right atrioventricular valve when it contracts
Correct Answer: A
Rationale: The right atrium (A) contracts to push blood through the right AV valve (tricuspid) into the right ventricle during atrial systole. Ventricles (B, D) pump out, left atrium (C) serves the mitral valve.
Question 2 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 3 of 5
Which of the following blood cells release granules that intensify the inflammatory response and promote hypersensitivity (allergic) reactions?
Correct Answer: D
Rationale: Basophils (D) release histamine and heparin, enhancing inflammation and allergies. Eosinophils (A) target parasites, monocytes (B) phagocytize, lymphocytes (C) are immune.
Question 4 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 5 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.