HESI A2
Vocabulary HESI A2
1. Select the meaning of the underlined word in the following sentence. Quick action kept the disease from permeating the general population.
- A. Conquering
- B. Wounding
- C. Deterring
- D. Infiltrating
Correct answer: D
Rationale: In this context, the word 'permeating' indicates the process of spreading throughout or penetrating into. 'Infiltrating' is the most appropriate synonym for this meaning, as it captures the idea of the disease spreading into the general population. 'Conquering' (Choice A) means to overcome or defeat, which is not the meaning in this context. 'Wounding' (Choice B) means to cause injury, which is not relevant to the sentence. 'Deterring' (Choice C) means to discourage or prevent, which does not fit the context of the disease spreading.
2. What is the definition of Bilateral?
- A. Occurring on one side
- B. Present on two sides
- C. Occurring in random areas
- D. Not occurring
Correct answer: B
Rationale: The correct definition of bilateral is something that is present on two sides. This term is commonly used in medical contexts to describe conditions or procedures that affect or involve both sides of a particular part of the body. Choice A, 'Occurring on one side,' is incorrect because bilateral refers to both sides, not just one. Choice C, 'Occurring in random areas,' is incorrect as bilateral specifically means on two sides, not random areas. Choice D, 'Not occurring,' is also incorrect as bilateral refers to something present on two sides, not the absence of occurrence.
3. To aspirate fluid, you might use a ___________.
- A. syringe
- B. beaker
- C. test tube
- D. flange
Correct answer: A
Rationale: To aspirate fluid, you would typically use a syringe. A syringe is a device consisting of a tube and a plunger, which allows you to draw fluids such as blood or medication into the tube by pulling back on the plunger. This action is called aspiration, and the syringe is a common tool for this purpose in various medical procedures. Choices B, C, and D are incorrect as they are not typically used for aspiration procedures. A beaker is a glass container used for holding liquids, a test tube is used for holding or mixing small quantities of substances, and a flange is a projecting rim or edge used for strength or for attaching to another object.
4. What is a mass of tissue formed in the ovary known as?
- A. corpus delicti
- B. corpus luteum
- C. corpus striatum
- D. corpus callosum
Correct answer: B
Rationale: A mass of tissue formed in the ovary is known as the corpus luteum. The corpus luteum is a temporary endocrine structure involved in the production of progesterone, which is essential for preparing and maintaining the uterus for pregnancy. Choices A, C, and D are incorrect. Corpus delicti refers to the body of a crime, corpus striatum is a part of the brain, and corpus callosum is a structure that connects the two hemispheres of the brain.
5. 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.
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