HESI A2
HESI A2 Practice Vocabulary
1. What is the process of digestion?
- A. Production of enzymes
- B. The mechanical and chemical breakdown of food
- C. Absorption of nutrients in the blood
- D. Movement of enzymes
Correct answer: B
Rationale: The correct answer is B: The mechanical and chemical breakdown of food. Digestion involves breaking down food mechanically and chemically into smaller components for absorption by the body. This process occurs in the digestive system, preparing nutrients for absorption in the intestines. Choices A, C, and D are incorrect because digestion is not solely about the production of enzymes, absorption of nutrients in the blood, or movement of enzymes; it primarily involves breaking down food for nutrient absorption.
2. A blood vessel that is distended is ____
- A. Narrow
- B. Swollen
- C. Flat
- D. Dilated
Correct answer: B
Rationale: The correct answer is B: 'Swollen.' Distended means swollen or expanded, not narrow (A), flat (C), or dilated (D). When a blood vessel is distended, it is enlarged or swollen due to increased pressure.
3. What is the meaning of the word 'placebo' in the following sentence: 'Ten patients will receive the experimental drug while 10 take a placebo'?
- A. Fallback
- B. Substitute
- C. Control
- D. Curative
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.
4. Which word in the sentence needs to be corrected for proper grammar?
- A. About it
- B. A
- C. With
- D. Made
Correct answer: B
Rationale: The word 'A' should be corrected to 'an' in the sentence. The sentence should read, 'The nurse made an error with the medication, so the doctor made notes about it in the patient's file.' The article 'an' is used before a noun beginning with a vowel sound, like 'error' in this case. Choices A, C, and D are grammatically correct in the sentence and do not need to be altered.
5. What word meaning 'once a year' fits best in the sentence: 'The _____ family reunion picnic was held at the Jones farm instead of the county park.'
- A. regular
- B. annual
- C. biennial
- D. holiday
Correct answer: B
Rationale: The word 'annual' refers to something that happens once every year. 'Regular' could mean frequent but doesn't specify a yearly event. 'Biennial' refers to something occurring every two years, while 'holiday' relates to a special day of celebration, not necessarily an annual event.
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