HESI A2 Practice Test Vocabulary

Correct Answer: A

Rationale: The correct answer is A: Gradual. In the context of disease development, "insidious" means slow and subtle in onset. This term implies a gradual progression without immediate noticeable symptoms. Choice B, momentous, means significant or important, which is not related to the gradual nature of the disease. Choice C, sudden, is the opposite of insidious, indicating a rapid onset. Choice D, innocuous, means harmless, which is not relevant to the negative connotation of insidious in disease development.

Correct Answer: B

Rationale: The correct answer is B: Toddler. A toddler is a child typically between the ages of 1 to 3 who is just learning to walk. This term specifically refers to the developmental stage of early childhood when children are beginning to gain mobility and independence. Rationale: 1. Obese (A): This term refers to a medical condition characterized by excess body fat, which is not related to a child learning to walk. 2. Geriatric (C): This term pertains to older individuals, typically over the age of 65, and is unrelated to a small child learning to walk. 3. Hale (D): This term means healthy and robust, but it does not specifically describe a small child just learning to walk. In summary, the term "toddler" is the correct choice as it accurately describes a young child in the stage of development where they are learning to walk, while the other choices are unrelated to this developmental stage.

Correct Answer: B

Rationale: The correct answer is B: Stimuli. The noun 'stimulus' follows the regular rule for forming plurals in English by adding 's' to the end of the word. In this case, 'stimulus' becomes 'stimuli' in plural form. Incorrect choices: A: Stimulus - Singular form, not plural. C: Stimulis - Incorrect spelling, should be 'stimuli' for plural. D: Stimula - Incorrect form, does not follow the rule for forming plurals in English.

Correct Answer: D

Rationale: The correct answer is D: Ventral. In anatomy, ventral refers to the front or lower surface of a structure. This term is commonly used to describe the underside of an organism or an anatomical feature. In this context, the lower surface of a structure is typically referred to as the ventral side. The other choices, A: Inferior, B: Transverse, and C: Dorsal, are incorrect in this context as they do not specifically refer to the lower surface of a structure. Inferior refers to being below or lower in position, transverse refers to being situated across something, and dorsal refers to the back or upper surface of a structure.

Correct Answer: C

Rationale: The correct answer is C: Surveillance. Under observation means being watched or monitored, which aligns with the definition of surveillance. Surveillance involves keeping a close watch over someone or something. Cognition (A) refers to mental processes, Isolation (B) means being separated or alone, and Assessment (D) involves evaluating or judging. These choices do not directly relate to being under observation.