what is the function of the gallbladder in the digestive system
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HESI A2

HESI A2 Anatomy and Physiology 2023

1. What is the function of the gallbladder in the digestive system?

Correct answer: B

Rationale: The gallbladder's main function is to store and concentrate bile produced by the liver. Bile is essential for the digestion and absorption of fats in the small intestine. Therefore, the correct answer is B, as the gallbladder acts as a reservoir for bile rather than producing it. Choices A, C, and D are incorrect because the gallbladder does not produce bile, detoxify harmful substances, or regulate blood sugar in the digestive system.

2. Select the meaning of the word 'initial' in the sentence: 'The doctor made an initial examination of the patient.'

Correct answer: B

Rationale: In this context, 'initial' means 'first,' referring to the first examination conducted by the doctor. The initial examination is the first assessment or evaluation performed on the patient. Therefore, 'first' is the correct meaning in this sentence. 'Complete' (choice A) is incorrect as initial does not imply completeness, 'incomplete' (choice C) is incorrect as initial does not mean unfinished, and 'discharge' (choice D) is unrelated to the concept of an initial examination.

3. Which word is used incorrectly in the following sentence? That is the doctor whose diploma is hung on the partition.

Correct answer: B

Rationale: The word 'whose' in the sentence should be 'whose.' 'Whose' is the correct possessive form used to indicate that the diploma belongs to the doctor. 'Who's' is a contraction for 'who is' or 'who has,' which does not make sense in this context. The other words in the sentence - 'That,' 'hung,' and 'partition' are all used correctly in the sentence.

4. How many grams are in 4 kilograms?

Correct answer: A

Rationale: The correct answer is A: 4000 grams. To convert kilograms to grams, you need to multiply the number of kilograms by 1000 since there are 1000 grams in 1 kilogram. Therefore, 4 kilograms is equal to 4 x 1000 = 4000 grams. Choice B (3000 grams), C (4500 grams), and D (3500 grams) are incorrect as they do not correctly convert 4 kilograms into grams.

5. Repeating decimals can be expressed as fractions. Which of the following represents the decimal 0.7777... as a fraction?

Correct answer: D

Rationale: To express the repeating decimal 0.7777... as a fraction, let x = 0.7777... Multiplying both sides by 10 to shift the decimal point to the right gives: 10x = 7.7777... Subtracting the original equation from the new equation eliminates the repeating decimal: 10x - x = 7.7777... - 0.7777... 9x = 7 x = 7/9. Therefore, the decimal 0.7777... can be expressed as the fraction 7/9. Choices A, B, and C are incorrect as they do not accurately represent the decimal 0.7777... when converted to a fraction.

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