ATI RN
Cardiovascular System Multiple Choice Questions Questions
Question 1 of 5
Cardiac output is the volume of blood ejected from the ventricle into the each minute.
Correct Answer: C
Rationale: Cardiac output (C) is total blood ejected per minute from both ventricles: left to aorta, right to pulmonary trunk (~5 L/min).
Question 2 of 5
Which of the following most accurately describes the order of the cardiac conduction system?
Correct Answer: C
Rationale: The correct order is SA node (initiates), AV node (delays), bundle of His, Purkinje fibers (C), ensuring atrial then ventricular contraction.
Question 3 of 5
What percentage of blood plasma is water?
Correct Answer: B
Rationale: Plasma is ~91.5% water (B), with the rest being proteins, electrolytes, etc. Other options are incorrect per standard physiology.
Question 4 of 5
The process of a white blood cell squeezing between endothelial cells to exit a blood vessel is called
Correct Answer: A
Rationale: Emigration (A) (or diapedesis) is WBC exit from vessels. Diaphysis (B) is bone-related, adhesion (C) is sticking, opsonization (D) enhances phagocytosis.
Question 5 of 5
Reduced vitamin B12 absorption from the small intestine due to reduced intrinsic factor production in the stomach results in condition called
Correct Answer: D
Rationale: Pernicious anemia (D) results from B12 deficiency due to low intrinsic factor, causing large, immature RBCs.