Vitamin D plays an important part in the absorption of calcium by the body.
Where is vitamin D activated into a form that promotes calcium absorption?
Small intestine.
Vitamin D is not activated into another form.
Kidneys.
Large intestine.
The Correct Answer is C
Choice A rationale
The small intestine is where nutrients are absorbed, but it is not where vitamin D is activated. Vitamin D is first converted in the liver and then activated in the kidneys to promote calcium absorption.
Choice B rationale
This is incorrect because vitamin D is activated into a form that promotes calcium absorption. The active form is crucial for maintaining calcium and phosphate levels in the blood.
Choice C rationale
The kidneys play a significant role in converting vitamin D to its active form, calcitriol. This activated form is essential for the absorption of calcium in the intestines.
Choice D rationale
The large intestine is involved in water absorption and waste formation but not in the activation of vitamin D. The activation process primarily occurs in the kidneys and liver. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Drawing up regular insulin first is recommended to avoid contamination of the vial with other types of insulin.
Choice B rationale
Incorrect, as it is standard practice to draw up regular insulin first to maintain purity and efficacy.
Correct Answer is D
Explanation
Choice A rationale
Itching and rash are not common adverse effects associated with calcium-channel blockers. They are more commonly related to other classes of medications.
Choice B rationale
Hypertension and tachycardia are not typical adverse effects of calcium-channel blockers. These medications are usually prescribed to treat hypertension and can actually cause a reduction in heart rate.
Choice C rationale
Nausea and diarrhea are possible side effects of many medications, but they are not specific adverse effects commonly linked to calcium-channel blockers.
Choice D rationale
Headache and dizziness are common adverse effects of calcium-channel blockers. These medications can cause vasodilation, leading to headaches and a decrease in blood pressure, which may result in dizziness, especially when standing up quickly. .
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