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 of the following statements is an opinion related to Super Foods?

Correct answer: C

Rationale: The statement about pomegranates being delicious and healthful reflects a subjective opinion about taste and health benefits. This contrasts with the other options, which present factual information about the nutritional content of walnuts, lentils, and oats, making C the correct choice for an opinion.

3. Which part of the bridge was built first according to the passage on Golden Gate Bridge?

Correct answer: B

Rationale: The correct answer is B, 'The anchorages.' The passage states that construction began by building the anchorages first. After that, the builders moved on to the towers, then the cables, and lastly, the roadway. Building the anchorages was crucial to providing a stable foundation for the bridge. Choices A, C, and D are incorrect because the passage clearly outlines the sequence of construction starting with the anchorages.

4. Why was the roadway so dangerous to build?

Correct answer: C

Rationale: The roadway was dangerous to build because the men involved in the construction were at risk of falling to their deaths. The excerpt mentions that the construction of the roadway was the most dangerous and treacherous part of the entire task, indicating a high risk of falling due to the height and precarious nature of the construction site. Choice A is incorrect because the danger was due to the physical risks of falling and not due to a lack of materials. Choice B is incorrect as passing cars were not the primary danger during the construction of the roadway. Choice D is incorrect since there is no mention of workers being attacked by animals during the construction of the Golden Gate Bridge.

5. Which statement would not be inferred by the reader in the passage about Hypertension?

Correct answer: B

Rationale: The correct answer is B. The passage clearly states that there are treatments for hypertension, so the statement that there is presently no reliable treatment for hypertension cannot be inferred from the text. Choice A can be inferred from paragraph 3 where it mentions losing weight to decrease blood pressure. Choice C can be inferred from paragraph 1 where it states that African Americans are more likely to have hypertension. Choice D can be inferred from paragraph 2 where it explains that older people are most often diagnosed with hypertension due to changes in blood vessels as they age.

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