ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 of 5
The function of blood is to:
Correct Answer: D
Rationale: Blood performs all these functions (D): nutrient transport, waste removal, and thermoregulation.
Question 2 of 5
Substance needed by the liver to make prothrombin
Correct Answer: A
Rationale: Vitamin K (A) is essential for liver synthesis of prothrombin.
Question 3 of 5
A differential white blood cell count would not be appropriate to:
Correct Answer: C
Rationale: Differential counts assess WBC types, not lipids (C).
Question 4 of 5
One of the following is not a formed element found in blood.
Correct Answer: D
Rationale: Plasma (D) is liquid, not a formed element.
Question 5 of 5
Net filtration pressure is calculated by
Correct Answer: D
Rationale: Net filtration pressure = capillary hydrostatic pressure (pushing out) - blood colloid osmotic pressure (pulling in) (D). Other options (A, B, C) misrepresent Starling forces.