ATI RN
Cardiovascular System Test Questions Questions
Question 1 of 5
Which of the following hormones stimulates proliferation of red blood cells in red bone marrow?
Correct Answer: A
Rationale: EPO (A) from kidneys stimulates RBC production. TPO (B) affects platelets, hGH (C) promotes growth, calcitonin (D) regulates calcium.
Question 2 of 5
Which of the following formed elements in blood are removed by fixed macrophages in the spleen and liver after only 5 to 9 days in the circulation?
Correct Answer: B
Rationale: Thrombocytes (platelets, B) last 5-9 days, cleared by spleen/liver macrophages.
Question 3 of 5
Which of the following cell types are classified as agranulocytes?
Correct Answer: D
Rationale: Agranulocytes (D) lack granules: lymphocytes and monocytes.
Question 4 of 5
Which of the following does not hasten clotting?
Correct Answer: B
Rationale: Heparin (B) inhibits clotting; others (A, C, D) promote it.
Question 5 of 5
General name for leukocytes containing large cytoplasmic granules that stain
Correct Answer: D
Rationale: Granulocytes (D) (neutrophils, eosinophils, basophils) have staining granules.