HESI A2
HESI A2 Anatomy and Physiology 2023
1. What is the primary function of the cardiovascular system?
- A. To transport oxygen and nutrients
- B. To regulate body temperature
- C. To remove waste products
- D. To produce hormones
Correct answer: A
Rationale: The correct answer is A: 'To transport oxygen and nutrients.' The primary function of the cardiovascular system is to transport oxygen, nutrients, and hormones to cells throughout the body and remove waste products. Choice B is incorrect because regulating body temperature is primarily the function of the body's thermoregulatory system, including sweat glands and blood vessels near the skin surface. Choice C is incorrect because while the cardiovascular system does help remove waste products through circulation, it is not its primary function. Choice D is incorrect as hormone production is mainly carried out by endocrine glands, not the cardiovascular system.
2. Select the correct word for the blank in the following sentence: 'Sharon felt ____ about how her speech had gone.'
- A. well
- B. good
- C. finely
- D. happily
Correct answer: B
Rationale: In this context, 'good' is the appropriate word to describe Sharon's feelings about her speech. 'Good' is used to express a positive sentiment which fits well with how one would feel about the outcome of a speech. 'Well' typically refers to the state of health or being done in a good way, not emotions. 'Finely' refers to something done very carefully or skillfully, not an emotional state. 'Happily' denotes a feeling of joy or pleasure, which may not be the most suitable term for describing her feelings about the speech outcome.
3. Select the word that makes this sentence grammatically correct. I added ___________ pepper to the casserole.
- A. too
- B. more
- C. those
- D. many
Correct answer: B
Rationale: The word 'more' is the correct choice to make the sentence grammatically correct. 'More' is used to indicate an increase in quantity, which fits well in the sentence structure 'I added more pepper to the casserole.' Choices A, C, and D are incorrect. 'Too' implies an excessive amount, 'those' refers to specific items, and 'many' is used for countable objects, none of which are suitable in this context.
4. The physician orders 60 mg of Augmentin; 80 mg/mL is on hand. How many milliliters will you give?
- A. 1 ml
- B. 0.5 ml
- C. 0.75 ml
- D. 1.25 ml
Correct answer: C
Rationale: To find the volume required, divide the prescribed dose (60 mg) by the concentration available (80 mg/mL): 60 mg รท 80 mg/mL = 0.75 mL. Therefore, 0.75 mL is the correct amount to administer. Choice A (1 ml) is incorrect as it does not consider the concentration of the solution. Choice B (0.5 ml) is incorrect as it is half the correct amount. Choice D (1.25 ml) is incorrect as it is more than the calculated correct amount.
5. A nurse works in a neonatal unit where infants' weights are measured in grams. What is the equivalent of 1,500 grams in pounds?
- A. 3.3 lbs
- B. 3.3 lbs
- C. 3.3 lbs
- D. 3.3 lbs
Correct answer: A
Rationale: To convert grams to pounds, you can use the conversion factor: 1 pound = 453.59237 grams. Therefore, to find the equivalent of 1,500 grams in pounds, divide 1,500 by 453.59237 to get approximately 3.3 pounds. Choice A is the correct answer because it accurately represents the conversion. Choices B, C, and D are duplicates and do not provide an alternative option.
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