HESI A2
Vocabulary for HESI A2
1. What does 'defecate' mean?
- A. To retain feces
- B. To expel feces
- C. To eliminate fluid
- D. To excrete mucus
Correct answer: B
Rationale: The correct answer is B: 'To expel feces.' Defecate refers to the act of eliminating solid waste from the body. Choice A, 'To retain feces,' is incorrect as defecation involves getting rid of feces. Choices C and D, 'To eliminate fluid' and 'To excrete mucus,' are also incorrect as they do not accurately define the term 'defecate.'
2. What does Medial mean?
- A. Away from the midline
- B. Toward the midline
- C. At the side
- D. Below the body
Correct answer: B
Rationale: Medial means toward the midline of the body. In anatomical terms, 'medial' refers to positions closer to the midline of the body, which divides the body into left and right halves. Choice A is incorrect as it describes 'lateral,' which means away from the midline. Choice C is incorrect as it describes 'lateral' or 'side.' Choice D is incorrect as it describes 'inferior,' which means below or lower in position.
3. What is Diffusion?
- A. Movement of materials from low concentration to high concentration
- B. Movement of materials from high concentration to low concentration
- C. Absorption of nutrients
- D. Breaking of materials
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.
4. Choose the meaning of the word 'dilute' in the following sentence: 'Always dilute that medicine before administering it to a patient.'
- A. Add water to
- B. Reduce by half
- C. Warm up
- D. Decontaminate
Correct answer: A
Rationale: In this context, 'dilute' means to make the medicine less concentrated by adding water or another liquid. It is important to dilute certain medicines to ensure they are safe and effective for a patient's use. Choice B, 'Reduce by half,' is incorrect as diluting does not necessarily mean reducing by half; it means to make less concentrated. Choice C, 'Warm up,' is unrelated to the meaning of dilute. Choice D, 'Decontaminate,' is also incorrect as dilute refers to reducing the concentration of a substance, not removing contaminants.
5. Select the word that means 'take into the body.'
- A. congest
- B. ingest
- C. collect
- D. suppress
Correct answer: B
Rationale: The correct answer is B: 'ingest.' The word 'ingest' means to take into the body, typically referring to food or drink. Choice A, 'congest,' means to block or fill up with fluid. Choice C, 'collect,' means to bring or gather together. Choice D, 'suppress,' means to prevent something from happening or to restrain.
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