ATI RN
Cardiovascular System Assessment Questions Questions
Question 1 of 5
Venous return does NOT depend on
Correct Answer: C
Rationale: Venous return relies on muscle pump (A), respiratory pump (B), and blood volume (D). Speed of flow (C) is an outcome, not a driver of return.
Question 2 of 5
With age, the size of the heart typically ___ and the resting heart rate ___
Correct Answer: D
Rationale: With age, the heart size increases (D) due to hypertrophy from workload, and resting heart rate decreases due to reduced autonomic responsiveness and fitness.
Question 3 of 5
The instrument used to measure blood pressure is known as:
Correct Answer: D
Rationale: A sphygmomanometer (D) measures blood pressure using a cuff and gauge. ECG (A) records heart electrical activity, barometer (B) atmospheric pressure, and manometer (C) general pressure.
Question 4 of 5
Parasympathetic stimulation of heart causes:
Correct Answer: A
Rationale: Parasympathetic (vagal) stimulation slows the SA node (A), reducing heart rate (bradycardia). B, C, and D are sympathetic effects.
Question 5 of 5
Conduction velocity is least in:
Correct Answer: A
Rationale: The AV node (A) has the slowest conduction (~0.05 m/s) to delay the signal. SA node (B) initiates, Purkinje (C, ~4 m/s) and Bundle of His (D, ~1 m/s) are faster.