what are the three steps of the wave of excitation
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Nursing Elites

HESI A2

HESI A2 Reading Comprehension V1 2024

1. What are the three steps of the 'wave of excitation'?

Correct answer: D

Rationale: The correct steps of the 'wave of excitation' are the excitation of the atrium, excitement of the ventricle, and relaxation of the ventricle. In the described process, the 'wave of excitation' starts with the discharge from the SA node, leading to the excitation of the atrium. Next, the peak ECG corresponds to the excitement of the ventricle, not its relaxation. Finally, the wave concludes with the relaxation of the ventricle, not its contraction. Therefore, choices A, B, and C are incorrect as they do not accurately describe the sequential steps of the 'wave of excitation' as presented in the extract.

2. Which might be a good title for this passage about Barefoot Running?

Correct answer: D

Rationale: The title 'The Debate over Barefoot Running' captures the main discussion in the passage.

3. The author suggests that persistent passivity and imperturbability may be a direct result of which of the following?

Correct answer: B

Rationale: The correct answer is B. The passage highlights that damage to the limbic system, specifically the amygdala, can lead to passivity and lack of aggression. This is supported by the statement that patients with trauma or damage to the amygdala exhibit a complete absence of aggression. Thus, a stroke causing severe tissue damage in the limbic system, including the amygdala, can result in persistent passivity and imperturbability. Choices A, C, and D are incorrect because they do not directly relate to damage in the limbic system, which is specifically mentioned in the passage as the cause of the described behaviors.

4. What is the main reason the author wrote the passage about the Electoral College?

Correct answer: B

Rationale: The correct answer is B. The passage primarily aims to explain how the Electoral College functions in U.S. elections. It provides details on how the Electoral College operates, including the allocation of electoral votes based on states' representation in Congress, the role of senators and representatives, and how electoral votes are cast during presidential elections. Choices A, C, and D are incorrect because the passage does not criticize, advocate for abolishing, or promote the benefits of the Electoral College. Instead, it focuses on clarifying its mechanism.

5. The passage implies that?

Correct answer: C

Rationale: The correct answer is C, as the passage indirectly implies that playing bridge requires concentration. This is evident when the passage discusses the custom of giving white elephants in Siam, suggesting that taking care of a white elephant was a burdensome responsibility, requiring focus and concentration. Choice A is incorrect because the passage does not explicitly state that Bridge is easy, but rather mentions that it can be complicated for beginners. Choice B is incorrect as the passage does not mention age as a factor for playing Bridge.

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