Nokea
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.
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Cyanocobalamin is a form of which vitamin?
- A. Vitamin B1
- B. Vitamin B2
- C. Vitamin B3
- D. Vitamin B12
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Metabolic control is especially important for women with gestational diabetes to ensure the infant does not develop:
- A. microsomia
- B. macrosomia
- C. type 1 diabetes
- D. type 2 diabetes
Correct Answer: B
Rationale: Metabolic control is crucial for women with gestational diabetes to prevent the development of macrosomia, which is characterized by an abnormally large baby. This condition poses risks such as birth injuries and necessitates careful management of blood sugar levels. Microsomia is not a known term related to this context. Type 1 and type 2 diabetes are not conditions the infant would develop as a result of gestational diabetes in the mother.
A patient with renal insufficiency should limit the intake of which of the following nutrients?
- A. Phosphorus
- B. Potassium
- C. Sodium
- D. Calcium
Correct Answer: A
Rationale: In patients with renal insufficiency, impaired kidney function can lead to difficulty in excreting phosphorus. High phosphorus levels can result in further complications such as bone and heart problems. Therefore, limiting the intake of phosphorus is crucial. Potassium and sodium restrictions may also be necessary in renal insufficiency, but the primary concern related to nutrients is phosphorus in this scenario. Calcium, while important for bone health, does not typically need to be restricted in renal insufficiency unless there is a specific medical reason to do so.
High blood pressure is defined as systolic and diastolic measurements greater than or equal to:
- A. 140 mm Hg and 90 mm Hg, respectively
- B. 150 mm Hg and 80 mm Hg, respectively
- C. 160 mm Hg and 110 mm Hg, respectively
- D. 180 mm Hg and 120 mm Hg, respectively
Correct Answer: A
Rationale: High blood pressure, or hypertension, is typically defined as having a systolic pressure of 140 mm Hg or higher and/or a diastolic pressure of 90 mm Hg or higher. Therefore, the correct answer is A. Choice B is incorrect because it suggests a higher systolic measurement than the standard definition. Choice C is incorrect as it provides an even higher systolic measurement and a much higher diastolic measurement. Choice D is also incorrect as it suggests extremely elevated blood pressure values, well above the typical definition of hypertension.
A vegan patient might be at risk for deficiency in which of the following nutrients?
- A. Vitamin B12
- B. Vitamin C
- C. Carbohydrates
- D. Fiber
Correct Answer: A
Rationale: The correct answer is Vitamin B12. Vitamin B12 is primarily found in animal products, so individuals following a vegan diet are at risk of deficiency as they do not consume these sources. Vitamin C, Carbohydrates, and Fiber are not specifically at risk for deficiency in vegan diets as they can be obtained from plant-based sources.