Vocabulary HESI A2 Practice Test

Correct Answer: B

Rationale: The correct answer is B: Larynx. The larynx is commonly known as the voice box because it houses the vocal cords responsible for producing sound. It is located at the top of the trachea and plays a crucial role in speech and breathing. The other choices are incorrect because the trachea (A) is the windpipe, the pharynx (C) is the throat, and the esophagus (D) is the tube that carries food to the stomach. The larynx is specifically associated with vocalization and sound production.

Correct Answer: B

Rationale: The correct answer is B: To begin or put into practice. 'Initiate' means to start something or set a process in motion. This is the correct answer because it accurately reflects the definition of the word. The other choices are incorrect because A: To finish is the opposite of 'initiate', C: To delay is the opposite of starting something, and D: To stop completely is also the opposite of initiating something.

Correct Answer: B

Rationale: The correct answer is B: Emetic. An emetic is a medicine that induces vomiting. This is achieved by irritating the stomach lining, leading to the body expelling its contents. A: Laxative helps with bowel movements, not vomiting. C: Vaccine is a substance that stimulates the immune system to produce immunity to a specific disease, not induce vomiting. D: Analgesic is a pain-relieving medication, not used for inducing vomiting.

Correct Answer: B

Rationale: The correct answer is B: Vague. NEBULOUS means unclear or lacking definite form. It is synonymous with vague. In contrast, A: Clear, C: Precise, and D: Obvious all indicate clarity and definiteness, which are the opposite of nebulous. Therefore, the correct answer is B as it best captures the meaning of nebulous.

Correct Answer: B

Rationale: The correct answer is B: Reddened or ruddy appearance. When someone is flushed, their skin appears red due to increased blood flow near the surface. This is typically caused by emotions, heat, or illness. Choice A, swollen, refers to an increase in size, not color. Choice C, discolored, implies a change in color different from redness. Choice D, pale, is the opposite of flushed, indicating a lack of color or a whitish appearance.