what is diffusion
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Nursing Elites

HESI A2

Quizlet Vocabulary HESI A2

1. 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.

2. What is a Contraindication?

Correct answer: B

Rationale: A contraindication is a specific situation in which a drug, procedure, or treatment should not be used because it may be harmful. Choice A is incorrect because a contraindication advises against performing an action. Choice C is incorrect as it refers to a precaution regarding side effects rather than a reason not to proceed. Choice D is incorrect because a contraindication does not advise the use of something.

3. What does Collusion refer to?

Correct answer: B

Rationale: Collusion refers to a secret agreement or conspiracy, often for deceitful or illegal purposes. While choices A, C, and D may involve some level of agreement or understanding, collusion specifically implies a secretive and usually dishonest arrangement, making choices A, C, and D incorrect in this context.

4. Choose the meaning of the word 'contusions' in the following sentence: 'Contusions or scratches may be treated on-site.'

Correct answer: C

Rationale: The correct answer is C: 'Bruises.' In the context of the sentence provided, 'contusions' refers to injuries that cause discoloration or bruising of the skin without breaking the skin. The word 'contusions' is synonymous with bruises, not breaks (choice A), disorientation (choice B), or abrasions (choice D). Therefore, in the sentence, contusions or scratches are mentioned as potential injuries that may require treatment on-site.

5. What does 'lethargic' mean?

Correct answer: B

Rationale: Lethargic refers to a state of sluggishness or drowsiness, making it difficult for a person to become alert or aroused. This term is the opposite of being active, energized, or wide awake. Choice A is incorrect as 'lethargic' is the opposite of 'active.' Choice C is incorrect as 'lethargic' implies a lack of energy. Choice D is incorrect as 'lethargic' signifies drowsiness, the opposite of being 'wide awake.' The correct answer is B.

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