HESI A2
HESI A2 Vocabulary 2023
1. Select the meaning of the word 'undulate' in the sentence: 'Each shiver made his muscles undulate beneath his skin.'
- A. Ripple
- B. Shake
- C. Flatten
- D. Unknot
Correct answer: A
Rationale: In this context, 'undulate' means to move in a smooth, wave-like motion. An undulation of muscles is a subtle, continuous rippling or rolling movement, making 'ripple' the most appropriate synonym in this sentence. 'Shake' (Choice B) is incorrect as it implies a more abrupt and irregular movement. 'Flatten' (Choice C) and 'Unknot' (Choice D) are unrelated to the smooth, wave-like motion described in the sentence.
2. Which word correctly completes the sentence? 'I ___ the package on the table.'
- A. Layed
- B. Drop
- C. Laid
- D. Lay
Correct answer: C
Rationale: The correct answer is 'C: Laid.' 'Laid' is the correct past tense form of 'lay,' which means to put something down. 'Layed' in choice A is incorrect as the past tense of 'lay' is 'laid,' not 'layed.' Choice B, 'Drop,' is incorrect as it does not fit the context of placing something on the table. Choice D, 'Lay,' is the base form of the verb and does not fit the sentence in the past tense.
3. The ETIOLOGY of the flu epidemic of 1918 remains unknown to this day.
- A. Pathology
- B. Transmission
- C. Etiology
- D. Mortality rate
Correct answer: C
Rationale: The term 'etiology' refers to the cause or origins of a disease. In this context, the question is asking for the underlying reason or cause of the flu epidemic of 1918. Therefore, the correct answer is C. 'Etiology.' Choice A, 'Pathology,' is incorrect as it refers to the study of diseases rather than the cause itself. Choice B, 'Transmission,' is incorrect as it relates to how a disease spreads rather than its cause. Choice D, 'Mortality rate,' is incorrect as it refers to the number of deaths caused by a disease rather than the cause of the disease itself.
4. Select the sentence in which 'snake' is used as a verb.
- A. The snake is in the grass
- B. He had to snake his way through the crowd
- C. The snake slithered away
- D. The spy had to snake his way onto the train
Correct answer: D
Rationale: The sentence 'The spy had to snake his way onto the train' correctly uses 'snake' as a verb. In this context, 'snake' is used to describe the spy's action of moving cunningly and stealthily, similar to how a snake slithers, making it the appropriate choice where 'snake' functions as a verb. The other choices use 'snake' as a noun to refer to the reptile itself or its movement, not as a verb.
5. What does Exposure mean?
- A. Protection from external elements
- B. Contact
- C. Absorption
- D. Isolation
Correct answer: B
Rationale: Exposure refers to coming into contact with external elements. Choice A is incorrect as exposure does not imply protection but rather contact. Choice C, absorption, refers to the process of soaking up or taking in something. Choice D, isolation, means being separated or kept apart from others, which is not synonymous with exposure.
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