Nursing Elites

1. What is the function of villi and microvilli in the GI tract?

• A. produce bile
• B. kill bacteria
• C. produce vitamin K
• D. increase the surface area for absorption

Correct answer: D

Rationale: Villi and microvilli in the GI tract serve to increase the surface area of the small intestine, aiding in the absorption of nutrients into the bloodstream. Choices A, B, and C are incorrect as villi and microvilli are primarily involved in enhancing absorption, not in producing bile, killing bacteria, or producing vitamin K.

2. Which food would benefit an anemic patient by increasing their intake?

• A. Beef
• B. Apples
• C. White bread
• D. Fish

Correct answer: A

Rationale: An anemic patient would benefit from increasing their intake of beef. Beef is an excellent source of heme iron, which is critical for treating anemia. Heme iron is absorbed more readily by the body compared to non-heme iron found in plant-based foods. Apples and white bread, while healthy, do not contain significant amounts of heme iron. Fish, although it does contain iron, it's non-heme iron, which is not as efficiently absorbed by the body as heme iron, hence less effective in treating anemia.

3. Uric acid kidney stones are most commonly associated with what condition?

• A. diabetes
• B. hypercalcemia
• C. gout
• D. diarrhea

Correct answer: C

Rationale: Gout is a condition characterized by high levels of uric acid, which can lead to the formation of uric acid kidney stones due to the crystallization of uric acid in the kidneys.

4. What food is most likely a source of trans fats in the diet?

• A. red meat
• B. peanut oil
• C. corn chips
• D. salmon

Correct answer: C

Rationale: The correct answer is C: corn chips. Corn chips, especially those processed and fried, are a common source of trans fats, which are associated with an increased risk of heart disease. Red meat (choice A) and salmon (choice D) do not typically contain trans fats unless they are processed or cooked in trans fat-containing oils. Peanut oil (choice B) can be a healthier option compared to trans fat-containing oils.

5. Which of the following converts starch to disaccharides, and this reaction occurs in the _____?

• A. pancreatic amylases, small intestine
• B. brush border enzymes, small intestine
• C. luminal enzymes, large intestine
• D. pancreatic amylases, pancreas

Correct answer: A

Rationale: The correct answer is A. Pancreatic amylases break down starch into disaccharides in the small intestine. This process occurs in the small intestine, not the large intestine or pancreas. Brush border enzymes act on disaccharides to break them down into monosaccharides, while luminal enzymes are not specifically involved in the conversion of starch to disaccharides.

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