Which of the following are functions of vitamin D in the body? Check all that apply.Check All That ApplyMaintenance of epithelial tissuesMaintenance of epithelial tissuesAbsorption of calcium and phosphorusAbsorption of calcium and phosphorusMaintenance of normal blood calciumMaintenance of normal blood calciumSynthesis of red blood cellsSynthesis of red blood cellsProduction and maintenance of healthy bonesProduction and maintenance of healthy bones
Question
Which of the following are functions of vitamin D in the body? Check all that apply.Check All That ApplyMaintenance of epithelial tissuesMaintenance of epithelial tissuesAbsorption of calcium and phosphorusAbsorption of calcium and phosphorusMaintenance of normal blood calciumMaintenance of normal blood calciumSynthesis of red blood cellsSynthesis of red blood cellsProduction and maintenance of healthy bonesProduction and maintenance of healthy bones
Solution
The functions of vitamin D in the body include:
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Maintenance of epithelial tissues: Vitamin D plays a role in the growth and maintenance of these tissues which line the outside of the body and the inside of organs and cavities in the body.
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Absorption of calcium and phosphorus: Vitamin D is crucial for the absorption of these minerals in the gut. Without sufficient vitamin D, the body cannot absorb these nutrients effectively.
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Maintenance of normal blood calcium: Vitamin D helps to regulate the amount of calcium in the blood. It does this by increasing or decreasing the amount of calcium and phosphorus absorbed from food, and by regulating the amount of calcium excreted by the kidneys.
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Production and maintenance of healthy bones: Vitamin D is essential for the development and maintenance of strong, healthy bones. It does this by helping the body absorb calcium, one of the main building blocks of bone.
However, the synthesis of red blood cells is not a function of vitamin D. This process is primarily regulated by a hormone called erythropoietin, which is produced by the kidneys.
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