HESI A2
HESI A2 Vocabulary Practice Test
1. The eye drops were intended to _____ the pupils for the eye exam.
- A. dilate
- B. constrict
- C. enlarge
- D. decrease
Correct answer: A
Rationale: The correct answer is 'dilate.' Eye drops are used to dilate the pupils, meaning to widen or enlarge them, which is necessary for an eye exam to allow more light to enter the eye. 'Constrict' (choice B) means to make smaller, which is the opposite effect needed for an eye exam. 'Enlarge' (choice C) is similar in meaning to dilate but is not the correct term used in this context. 'Decrease' (choice D) means to make less or reduce, which is also the opposite of what is required for an eye exam.
2. What is Diffusion?
- A. Movement of materials from low concentration to high concentration
- B. Movement of materials from high concentration to low concentration
- C. Absorption of nutrients
- D. Breaking of materials
Correct answer: B
Rationale: Diffusion is the process where substances move from an area of high concentration to an area of low concentration. This movement occurs due to the random motion of particles and continues until equilibrium is reached. Choice A is incorrect because diffusion occurs down the concentration gradient, from high to low concentration, not from low to high concentration. Choice C is incorrect as it refers to the uptake of substances by cells, not the general process of diffusion. Choice D is incorrect as it does not accurately describe the process of diffusion; diffusion involves the movement of substances, not the breaking of materials.
3. To which part of the human body does anterior refer?
- A. Back
- B. Front
- C. Side
- D. Top
Correct answer: B
Rationale: The term 'anterior' in anatomy refers to the front part of the body. It is used to describe the position of structures relative to the front of the body. Therefore, the correct answer is 'Front' (choice B). Choices A, C, and D are incorrect because 'anterior' specifically pertains to the front, not the back, side, or top of the body.
4. What is your “funny bone” actually?
- A. Humerus
- B. Ulnar nerve
- C. Carpal bone
- D. Biceps brachii
Correct answer: B
Rationale: Your 'funny bone' is actually your ulnar nerve, not a bone. The ulnar nerve runs along the inside part of your elbow and is easily bumped or compressed, leading to a tingling or slightly painful sensation that is commonly referred to as hitting your funny bone. The humerus (Choice A) is the long bone in your upper arm, the carpal bone (Choice C) is a bone in your wrist, and the biceps brachii (Choice D) is a muscle in your upper arm. Therefore, the correct answer is the ulnar nerve (Choice B).
5. Select the meaning of the word 'symmetric' in the sentence: 'The symmetric patterns of scarring were evident on the patient's back.'
- A. scabbed
- B. painful
- C. corresponding
- D. geometric
Correct answer: C
Rationale: In this context, 'symmetric' refers to patterns that correspond or are balanced on both sides, exhibiting symmetry. The scarring on the patient's back displayed a mirrored or corresponding arrangement. Choices A, B, and D are incorrect because 'symmetric' does not mean scabbed, painful, or geometric in this sentence.
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