ATI RN
Cardiovascular System Test Questions Questions
Question 1 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 2 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 3 of 5
General name for leukocytes containing large cytoplasmic granules that stain
Correct Answer: D
Rationale: Granulocytes (D) (neutrophils, eosinophils, basophils) have staining granules.
Question 4 of 5
Element that is necessary in two steps of the clotting process
Correct Answer: B
Rationale: Calcium (B) aids prothrombinase formation and fibrin conversion.
Question 5 of 5
Which of the following is not a factor in destroying attacking pathogens?
Correct Answer: D
Rationale: Clotting (D) stops bleeding, not pathogens; others (A, B, C) aid immunity.