HESI A2
Vocabulary HESI A2
1. Which word names an infected swelling with liquid inside?
- A. Blast
- B. Gash
- C. Hive
- D. Boil
Correct answer: D
Rationale: A boil is an infected swelling on the skin filled with pus, which is a type of liquid. It is typically caused by a bacterial infection in a hair follicle or oil gland. The other options, blast, gash, and hive, do not specifically describe an infected swelling with liquid inside like a boil does. A 'blast' is a sudden strong movement or gust, 'gash' refers to a long, deep cut or wound, and 'hive' is a skin reaction characterized by itchy welts.
2. What is a nit?
- A. abscess
- B. parasite
- C. bandage
- D. infection
Correct answer: B
Rationale: A nit is a kind of parasite, specifically the egg of a louse. Nits are typically found attached to hair close to the scalp and are commonly associated with head lice infestations. Choice A, 'abscess,' is incorrect as an abscess is a collection of pus caused by an infection. Choice C, 'bandage,' is incorrect as it is a material used for covering wounds. Choice D, 'infection,' is incorrect as it refers to the invasion and multiplication of microorganisms in body tissues.
3. What does 'Parameter' mean?
- A. A constant variable
- B. A characteristic or constant factor
- C. A measurable limit
- D. A calculated risk
Correct answer: B
Rationale: The correct answer is B: 'A characteristic or constant factor.' In the context of systems or experiments, a parameter is a fixed element that influences the behavior or outcome. It is not a variable like in choice A, which can change. Choice C, 'A measurable limit,' is incorrect as a parameter is not necessarily a physical limit but a defining factor. Choice D, 'A calculated risk,' is unrelated to the definition of a parameter.
4. What are the soft spots on the head of a newborn called?
- A. Fistula
- B. Fontanel
- C. Follicle
- D. Fissure
Correct answer: B
Rationale: The correct answer is B: Fontanel. Fontanels are spaces between the bones of a newborn's skull that allow for brain growth and development. The term 'fistula' (choice A) refers to an abnormal passageway between two organs or between an organ and the body surface, not related to newborn soft spots. 'Follicle' (choice C) is a structure in the skin that contains the hair root, not related to the skull. 'Fissure' (choice D) refers to a narrow opening or crack, which is not the term used for the soft spots on a newborn's head.
5. Select the meaning of the word 'distended' in the sentence: 'Wracked by abdominal pain, the victim of food poisoning moaned and rubbed his distended belly.'
- A. concave
- B. sore
- C. swollen
- D. empty
Correct answer: C
Rationale: The correct answer is C: 'swollen.' In the context provided, 'distended' refers to the victim's belly being enlarged or bloated due to abdominal pain. This matches the description of the victim moaning and rubbing his belly, indicating discomfort from swelling. Choices A, B, and D are incorrect. 'Concave' means having an inward curve, opposite to the intended meaning. 'Sore' means experiencing pain or discomfort, which is not directly related to the physical enlargement described in the sentence. 'Empty' means containing nothing, which contrasts with the idea of the belly being visibly enlarged or bloated.
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