what are the three steps of the wave of excitation
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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. Where is Thailand located?

Correct answer: D

Rationale: Thailand is located in Asia, not South America. Thailand is a country in Southeast Asia known for its beautiful beaches, rich culture, and delicious cuisine. It shares borders with Myanmar, Laos, Cambodia, and Malaysia. The extract provided also mentions the country of Siam, which is now known as Thailand, indicating its location in Asia. Choices A, B, and C are incorrect as Thailand is not located in Africa, Europe, or South America.

3. What is implied about Benjamin Franklin in the passage on Daylight Savings Time?

Correct answer: C

Rationale: The correct answer is C. The passage states that Benjamin Franklin first suggested the introduction of Daylight Savings Time in the 18th century. However, the first serious proposal came in 1907 from William Willet. Franklin's idea was not implemented during his lifetime, but he did propose the concept. Therefore, choices A, B, and D are incorrect. Choice A is incorrect because Franklin did not oppose the idea. Choice B is incorrect because he was not the first to implement it. Choice D is incorrect because he did have a role in proposing the idea.

4. What is stated in this paragraph?

Correct answer: D

Rationale: The correct answer is D. The paragraph explains that harsh voice qualities usually result from too much tension in the throat and jaw. It further discusses how tension tightens muscles, leading to unpleasant voice tones. While the paragraph addresses the issue of harsh voices, it does not mention that only some men have harsh voices (choice A) or that relaxed people often exhibit this quality (choice B). Additionally, the paragraph does not touch upon whether everyone finds harsh voices irritating (choice C), only stating that not everyone may be bothered by it.

5. What was the author's primary purpose for writing this essay?

Correct answer: A

Rationale: The author's primary purpose for writing this essay is to inform the readers about the stages of the water cycle. The essay explains how water moves through the cycle, including processes like precipitation, runoff, evaporation, and condensation. Choice A is correct because the focus is on educating readers about the water cycle, not just explaining how rain is formed (Choice B), persuading readers to preserve water (Choice C), or discussing water's importance in life (Choice D). The detailed explanation of the water cycle provided in the extract supports the correct answer.

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