ATI RN
Cardiovascular System Test Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Which is NOT a function of plasma proteins?
Correct Answer: D
Rationale: Oxygen transport (D) is by hemoglobin in RBCs, not plasma proteins.
Question 5 of 5
Hydrostatic pressure is
Correct Answer: B
Rationale: Hydrostatic pressure (B) is fluid pressure against vessel walls. It’s higher at the arterial end (not A), decreases along the capillary (not zero at midpoint, C), so only B is correct.