ATI RN
Cardiovascular System Test Questions Questions
Question 1 of 5
Which of the following substances is an anticoagulant produced by mast cells and basophils?
Correct Answer: A
Rationale: Heparin (A) from mast cells/basophils inhibits clotting. Fibrinogen (B) forms clots, thromboxane A2 (C) promotes aggregation, prostacyclin (D) inhibits platelets.
Question 2 of 5
Which of the following cell types are classified as agranulocytes?
Correct Answer: D
Rationale: Agranulocytes (D) lack granules: lymphocytes and monocytes.
Question 3 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 4 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 5 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.