ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Cardiac outputs is maximum to:
Correct Answer: A
Rationale: The liver receives the most blood (~1.5 L/min, A), though kidneys (C, ~1.2 L/min) are close. Brain (B, ~0.75 L/min) and heart (D, ~0.25 L/min) get less.
Question 5 of 5
Identify the pouch-like structure that increases the total filling capacity of the atrium.
Correct Answer: D
Rationale: The auricle is a pouch-like extension of the atrium, increasing its capacity. Ventricle (A) is a chamber, coronary sulcus (B) is a groove, fossa ovalis (C) is a fetal remnant, and interatrial septum (D) divides atria.