HESI A2
HESI A2 Vocabulary 2024
1. What is the meaning of the word 'placebo' in the following sentence: 'Ten patients will receive the experimental drug while 10 take a placebo'?
- A. Fallback
- B. Substitute
- C. Control
- D. Curative
Correct answer: C
Rationale: In the context of the sentence, the word 'placebo' refers to a substance or treatment that resembles a real medical treatment but has no therapeutic effect. It is used as a standard against which the effects of the experimental drug are compared. A placebo is typically included in a control group in medical research to evaluate the actual effects of the experimental drug. Therefore, in this scenario, the placebo serves as a control to gauge the effectiveness of the experimental drug, making choice C the correct answer. Choices A, B, and D are incorrect because a placebo is not a fallback, substitute, or curative treatment in this context.
2. The development of the disease was 'insidious'. What does insidious mean in this context?
- A. Gradual
- B. Momentous
- C. Sudden
- D. Innocuous
Correct answer: A
Rationale: In this context, 'insidious' means progressing slowly but having harmful effects. This matches the meaning of 'gradual,' making it the correct answer. 'Momentous' means significant or important, which is not the meaning conveyed by 'insidious.' 'Sudden' means abrupt or unexpected, opposite to the slow progression indicated by 'insidious.' 'Innocuous' means harmless, which is the opposite of the harmful effects associated with an insidious disease.
3. In medicine, to be resistant is to be ___________.
- A. unwilling
- B. unaffected by
- C. opposed to
- D. accepting of
Correct answer: B
Rationale: In medicine, when a microorganism or pathogen is described as resistant, it means that it is not affected by the drug or treatment being used against it. Resistance can develop due to various factors, making the pathogen no longer susceptible to the effects of the treatment. Therefore, the correct answer is 'unaffected by.' The other choices are incorrect: 'unwilling' and 'opposed to' do not accurately describe the concept of resistance in medicine, and 'accepting of' is the opposite of what resistance represents in this context.
4. If tubes distend, they ___________.
- A. flex
- B. stretch
- C. solidify
- D. collapse
Correct answer: B
Rationale: When tubes distend, they expand or become enlarged, which typically results in stretching rather than flexing, solidifying, or collapsing. Distending tubes imply an increase in size or volume, indicating a stretching or expansion effect. Therefore, the correct answer is 'stretch.' Choice A, 'flex,' is incorrect as flexing refers to bending or curling, not expanding. Choice C, 'solidify,' is incorrect as solidifying refers to becoming solid, which is not related to the expansion of tubes. Choice D, 'collapse,' is incorrect as collapsing refers to falling in or giving way, which is the opposite effect of distending.
5. What is another word for deluge?
- A. Earthquake
- B. Dimness
- C. Downpour
- D. Chasm
Correct answer: C
Rationale: A "deluge" is a sudden and heavy rainfall or flood, so the word that is most closely related in meaning to "deluge" is "downpour," which also refers to a heavy and sustained rainfall. The other choices, "earthquake," "dimness," and "chasm," do not relate to a flooding or heavy rainfall situation.
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