HESI A2
HESI A2 Vocabulary 2023
1. The electrolytes in human bodies include sodium, potassium, calcium, and ___________, among others.
- A. magnesium
- B. manganese
- C. magnetite
- D. manganite
Correct answer: A
Rationale: Magnesium is another essential electrolyte in the human body, along with sodium, potassium, and calcium. Magnesium plays a crucial role in various bodily functions, including muscle and nerve function, regulating blood pressure, and supporting the immune system. Manganese (Choice B), magnetite (Choice C), and manganite (Choice D) are not electrolytes found in the human body. Manganese is a mineral but not an electrolyte, while magnetite and manganite are compounds and not essential electrolytes for bodily functions.
2. 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.
3. This medication works by inhibiting the action of a certain enzyme. What does inhibiting mean?
- A. Blocking
- B. Hindering
- C. Energizing
- D. Blocking improvement
Correct answer: B
Rationale: The correct answer is 'B: Hindering.' Inhibiting means to hinder or slow down a process. Choices A and D are similar and imply a complete stop of the process rather than just slowing it down. Choice C, 'Energizing,' is the opposite of inhibiting, as it means to provide energy or stimulate rather than hinder.
4. What does Redundancy mean?
- A. Deficiency
- B. Surplus
- C. Delicate
- D. Abundance
Correct answer: B
Rationale: Redundancy means having more than is needed, making 'Surplus' the correct choice. The term does not relate to 'Deficiency' (lack), 'Delicate' (fragile), or 'Abundance' (plenty). In the context of this question, Redundancy refers to an excess or surplus of something.
5. What does 'internal' mean?
- A. Near the surface of the body
- B. Located within the body
- C. Outside the body
- D. Far from the body
Correct answer: B
Rationale: Internal means located within the body. When something is described as internal, it refers to being inside the body or contained within the boundaries of an organism. Choices A, C, and D are incorrect as they describe locations that are either near the surface, outside, or far from the body, respectively, which are not the meanings of 'internal.'
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