HESI A2
HESI A2 Vocabulary 2024
1. 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.
2. What is the best description for the phrase monitor progress in the following sentence? The agency will monitor progress of the pilot program, reviewing reports and conducting our own inspections if necessary.
- A. Watch over modernization
- B. Take charge of expansion
- C. Keep an eye on improvement
- D. Pore over succession
Correct answer: C
Rationale: The phrase 'monitor progress' in this context means to observe or keep track of how the pilot program is developing or improving. It involves regularly reviewing reports and conducting inspections to ensure that things are progressing as expected. 'Keep an eye on improvement' accurately describes the action of monitoring progress in this scenario, making it the correct choice. Choices A, B, and D are incorrect as they do not capture the essence of overseeing development and ensuring improvement.
3. What is another word for elated?
- A. Edified
- B. Confused
- C. Flabbergasted
- D. Delighted
Correct answer: D
Rationale: The word 'elated' means to be ecstatically happy or joyful. Similarly, 'delighted' also means to be extremely pleased or filled with joy. Therefore, 'delighted' is another word that could be used to express the same meaning as 'elated.' Choices A, B, and C are incorrect. 'Edified' means to instruct or enlighten, 'confused' means to be unclear or bewildered, and 'flabbergasted' means to be astonished or amazed, which do not convey the same meaning as 'elated.'
4. What does 'Parameter' mean?
- A. A constant variable
- B. A characteristic or constant factor
- C. A measurable limit
- D. A calculated risk
Correct answer: B
Rationale: The correct answer is B: 'A characteristic or constant factor.' In the context of systems or experiments, a parameter is a fixed element that influences the behavior or outcome. It is not a variable like in choice A, which can change. Choice C, 'A measurable limit,' is incorrect as a parameter is not necessarily a physical limit but a defining factor. Choice D, 'A calculated risk,' is unrelated to the definition of a parameter.
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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