HESI A2
Quizlet Vocabulary HESI A2
1. A blood vessel that is distended is ____
- A. Narrow
- B. Swollen
- C. Flat
- D. Dilated
Correct answer: B
Rationale: The correct answer is B: 'Swollen.' Distended means swollen or expanded, not narrow (A), flat (C), or dilated (D). When a blood vessel is distended, it is enlarged or swollen due to increased pressure.
2. 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.
3. What is the best description for the term anodyne?
- A. Emulsified
- B. Liquefied
- C. Contaminated
- D. Painkilling
Correct answer: D
Rationale: The term 'anodyne' refers to something that relieves or alleviates pain or discomfort. Therefore, the best description for anodyne is 'painkilling.' Choices A (Emulsified), B (Liquefied), and C (Contaminated) are incorrect as they do not accurately represent the meaning of anodyne.
4. Select the meaning of the word 'trepidation' in the sentence: 'The students approached the cadaver with some trepidation.'
- A. Wonder
- B. Confusion
- C. Eagerness
- D. Apprehension
Correct answer: D
Rationale: In this sentence, the word 'trepidation' is used to describe the feeling the students had when approaching the cadaver. Trepidation means a feeling of fear or anxiety about something that may happen, so it aligns most closely with the meaning of 'apprehension.' The students were hesitant or worried about facing the cadaver. Choice A ('Wonder') is incorrect as trepidation does not signify a feeling of wonder. Choice B ('Confusion') is incorrect as trepidation is not about being confused. Choice C ('Eagerness') is incorrect as trepidation is the opposite of eagerness; it indicates hesitation or anxiety, not excitement or enthusiasm.
5. What does Vacuous mean?
- A. Empty
- B. Full
- C. Dense
- D. Bright
Correct answer: A
Rationale: The correct answer is A: 'Empty.' Vacuous means lacking intelligence, empty-headed, or devoid of substance. Choice B, 'Full,' is incorrect as it is the opposite of vacuous. Choice C, 'Dense,' means closely compacted or stupid, not vacuous. Choice D, 'Bright,' means giving out or reflecting a lot of light, not vacuous.
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