HESI A2
HESI A2 Vocabulary Practice Test
1. What is the meaning of Diameter?
- A. The width of a structure
- B. The distance across the center of an object
- C. The height of an object
- D. The radius of a circle
Correct answer: B
Rationale: The correct answer is B. Diameter is defined as the distance across the center of an object, typically a circle. Choice A is incorrect because width refers to the measurement of something from side to side, not necessarily through the center. Choice C is incorrect because height is a measurement from top to bottom, not across the center. Choice D is incorrect because the radius of a circle is the distance from the center to any point on the circle's circumference, not the distance across the center.
2. Select the meaning of the underlined word in the following sentence. We will do more tests, as the data so far are inconclusive.
- A. Unsettled
- B. Convincing
- C. Unfavorable
- D. Bewildering
Correct answer: A
Rationale: The word 'inconclusive' in the sentence describes the data as not definitive or final, indicating that further tests are needed to reach a solid conclusion. 'Inconclusive' means not leading to a firm decision or result, making 'unsettled' the most suitable synonym in this context. Choice B, 'convincing,' does not align with the meaning of 'inconclusive' as it suggests that the data is already clear and persuasive, which contradicts the context. Choice C, 'unfavorable,' is not the best fit as 'inconclusive' does not imply a negative or unfavorable outcome but rather indicates a lack of a definitive answer. Choice D, 'bewildering,' does not capture the meaning of 'inconclusive' in this context. Bewildering implies confusion or puzzlement, which is not the intended meaning in the sentence.
3. The electrolytes in human bodies include sodium, potassium, calcium, and ___________, among others.
- A. magnesium
- B. manganese
- C. magnetite
- D. manganite
Correct answer: A
Rationale: Magnesium is another essential electrolyte in the human body, along with sodium, potassium, and calcium. Magnesium plays a crucial role in various bodily functions, including muscle and nerve function, regulating blood pressure, and supporting the immune system. Manganese (Choice B), magnetite (Choice C), and manganite (Choice D) are not electrolytes found in the human body. Manganese is a mineral but not an electrolyte, while magnetite and manganite are compounds and not essential electrolytes for bodily functions.
4. Another word for the gonads might be the ___________.
- A. sperm
- B. vagina
- C. testes
- D. pelvis
Correct answer: C
Rationale: Another word for the gonads would be the testes in males and ovaries in females. The gonads are the primary reproductive organs that produce gametes (sperm in males and eggs in females) and sex hormones. The term 'testes' specifically refers to the male gonads, while 'ovaries' would refer to the female gonads. Therefore, 'testes' is the correct answer as it directly relates to the male gonads, making choices A, B, and D incorrect.
5. 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.
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