HESI A2 Vocabulary 2023

Correct Answer: C

Rationale: The correct answer is C: To dispute the truth of. Impugn means to challenge the validity or truthfulness of something. This is the correct answer because impugning involves questioning or casting doubt on the credibility of a statement or claim. A: To instill with - This choice is incorrect because instill means to introduce gradually, which is not related to the meaning of impugn. B: To instruct about - This choice is incorrect because instruct means to teach or provide information, not to challenge the truth of something. D: To lament or complain about - This choice is incorrect because lamenting or complaining is about expressing sorrow or dissatisfaction, not about disputing the truth of something.

Correct Answer: D

Rationale: The correct answer is D: sternum. The sternum is commonly known as the breastbone in human anatomy. It is a flat bone located in the center of the chest, connecting the rib bones. The term "sternum" is derived from the Greek word "sternon," which means chest. The other choices (A: stelic, B: steres, C: sterol) are not anatomical terms related to the breastbone or chest structure, making them incorrect options in this context.

Correct Answer: C

Rationale: The correct answer is C: Reaction. In the context of the sentence, 'reflex' refers to an involuntary and nearly instantaneous reaction to a stimulus. The patellar reflex mentioned involves the leg extension in response to a tap on the patellar tendon. Replication (A) does not fit the context as the sentence is not referring to duplicating something. Convulsion (B) implies a violent, involuntary contraction of muscles, which is not the focus here. Stretching (D) is not the correct choice as it does not capture the immediate and automatic nature of a reflex action.

Correct Answer: B

Rationale: The correct answer is B: Drooping or loose. Flaccid means lacking firmness or stiffness, often used to describe something that is limp or lacking in strength or vigor. In this context, flaccid refers to something that is drooping or loose. Choice A is incorrect as light-colored does not relate to the definition of flaccid. Choice C is incorrect as uncontaminated is not a synonym of flaccid. Choice D is incorrect as unusually aggressive is unrelated to the meaning of flaccid.

Correct Answer: D

Rationale: The correct answer is D, "To move side to side." In the context of the sentence, 'yaw' refers to a horizontal movement of the robotic arm requiring adjustment. This movement aligns with the definition of yaw as a side-to-side motion, commonly used in aviation and robotics. Choice A, "To gape open," is incorrect as it does not fit the context of the sentence. Choice B, "To move up and down," does not align with the horizontal movement described. Choice C, "To close tightly," is also incorrect as it does not relate to any form of movement but rather a stationary action.