select the meaning of the underlined word in the following sentence ten patients will receive the experimental drug while 10 take a placebo
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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'?

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. Choose the meaning of the word 'ameliorate' in the following sentence: 'Did that dosage appear to ameliorate the tenderness?'

Correct answer: B

Rationale: The word 'ameliorate' means to improve or make something better. In this sentence, the question is asking whether the dosage made the tenderness better, indicating an improvement in the condition. Therefore, the correct meaning of 'ameliorate' is to improve, making option B the correct choice. Choices A, C, and D are incorrect as they do not accurately reflect the meaning of 'ameliorate' in the context provided.

3. Choose the meaning of the word 'distended' in the following sentence: 'The patient's distended veins were a cause for worry.'

Correct answer: B

Rationale: The term 'distended' means swollen or enlarged. In this context, when the patient's veins are described as distended, it implies that they are expanded or swollen beyond their normal size, which can be a cause for worry due to potential health implications. Choice A ('Bleeding') is incorrect as 'distended' does not refer to bleeding but rather to being swollen. Choice C ('Pressure') is incorrect as 'distended' does not directly imply pressure but rather enlargement. Choice D ('Minuscule') is incorrect as 'distended' means the opposite of minuscule, indicating something enlarged or swollen.

4. Choose the meaning of the word 'yaw' in the following sentence: 'The robotic arm may yaw too much and need adjusting.'

Correct answer: D

Rationale: In this sentence, the term 'yaw' refers to a movement where the robotic arm moves side to side. The context suggests that the arm is exhibiting too much of this side-to-side movement and requires adjustment to rectify the issue. Choice A, 'to gape open,' is incorrect as 'yaw' does not imply opening. Choice B, 'to move up and down,' is incorrect as 'yaw' specifically refers to side-to-side movement. Choice C, 'to close tightly,' is incorrect as it does not relate to the movement described in the sentence.

5. Select the meaning of the underlined word in the following sentence. Quick action kept the disease from permeating the general population.

Correct answer: D

Rationale: In this context, the word 'permeating' indicates the process of spreading throughout or penetrating into. 'Infiltrating' is the most appropriate synonym for this meaning, as it captures the idea of the disease spreading into the general population. 'Conquering' (Choice A) means to overcome or defeat, which is not the meaning in this context. 'Wounding' (Choice B) means to cause injury, which is not relevant to the sentence. 'Deterring' (Choice C) means to discourage or prevent, which does not fit the context of the disease spreading.

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