ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 of 5
Blood flows the fastest in
Correct Answer: B
Rationale: Blood flows fastest in arteries (B, ~300-500 mm/s) due to high pressure and large diameter. Capillaries (C, ~0.3 mm/s), venules (A), and arterioles (D) are slower due to smaller size or lower pressure.
Question 2 of 5
What vessels drain blood from the kidneys?
Correct Answer: C
Rationale: Renal veins (C) drain blood from the kidneys to the inferior vena cava. Hepatic veins (A) drain the liver, jugulars (B) the head, and iliac arteries (D) supply blood.
Question 3 of 5
Aorta pierces the diaphragm at the level of:
Correct Answer: C
Rationale: The aorta passes through the diaphragm at the aortic hiatus, level T12 (C). T8 (A) is the inferior vena cava, T10 (B) the esophagus, and C6 (D) is cervical.
Question 4 of 5
A patient with high fever will most likely demonstrate the sign of:
Correct Answer: A
Rationale: Fever increases metabolic rate, raising heart rate (A, tachycardia) via sympathetic activation. Appetite (B) decreases, sweating (C) increases, and urinary output (D) may decrease due to dehydration.
Question 5 of 5
Peripheral resistance is maximum in:
Correct Answer: C
Rationale: Arterioles (C) have the highest resistance due to small diameter and smooth muscle control (Poiseuille’s law). Aorta (A) and arteries (B) have less, veins (D) minimal.