what does concave mean
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Nursing Elites

HESI A2

HESI A2 Vocabulary Practice Test

1. What does concave mean?

Correct answer: A

Rationale: Concave means rounded inward. When something is concave, it curves inwards like the interior of a bowl. Choice B, 'Rounded outward,' is incorrect as this describes a convex shape, not concave. Choice C, 'Straight,' is incorrect as concave refers to a curved shape, not a straight one. Choice D, 'Flat,' is also incorrect as it does not describe the inward curve characteristic of concave shapes.

2. What is the meaning of the word 'derivative' in the following sentence: 'The professor’s lecture seemed to be a bit derivative'?

Correct answer: A

Rationale: The word 'derivative' in this sentence means that the professor's lecture was not original, but instead heavily based on or closely imitating something else. Therefore, the correct meaning is 'unoriginal.' Choices B, C, and D are incorrect. 'Monotonous' means lacking in variety and boringly repetitive, 'condescending' means showing a superior attitude, and 'long-winded' means using more words than necessary.

3. What is the best description for the word establish in the following sentence? Physicians use patch tests to establish the specific causes of contact dermatitis.

Correct answer: D

Rationale: In the given sentence, the word 'establish' is used in the context of identifying or finding out the specific causes of contact dermatitis through patch tests. The most fitting description for 'establish' in this context is 'Determine,' as it signifies the action of figuring out or ascertaining the specific causes. 'Launch,' 'introduce,' and 'endorse' do not capture the essence of what the physicians are doing in this scenario. They are not launching, introducing, or endorsing the causes; instead, they are trying to determine them through the patch tests.

4. What is Diffusion?

Correct answer: B

Rationale: Diffusion is the process where substances move from an area of high concentration to an area of low concentration. This movement occurs due to the random motion of particles and continues until equilibrium is reached. Choice A is incorrect because diffusion occurs down the concentration gradient, from high to low concentration, not from low to high concentration. Choice C is incorrect as it refers to the uptake of substances by cells, not the general process of diffusion. Choice D is incorrect as it does not accurately describe the process of diffusion; diffusion involves the movement of substances, not the breaking of materials.

5. What is the best description for the word operated in this sentence? Rural communities are increasingly taking ownership of their hospitals, which may be operated by administrative medical groups.

Correct answer: C

Rationale: In the context of the sentence provided, the word 'operated' is best described as 'managed and run.' This choice accurately reflects the idea that rural communities are taking ownership and control of their hospitals, which may be overseen and operated by administrative medical groups. The word 'operated' here implies the day-to-day management and functioning of the hospitals, making option C the most suitable description in this context. Choices A, B, and D are incorrect as they do not capture the essence of 'operated' in the context of managing and running the hospitals.

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