Which tissue is important in vitamin D metabolism?

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Enhance your knowledge with the Ciulla Clinical Chemistry Test. Study with interactive quizzes, featuring flashcards and multiple-choice questions. Each question offers hints and explanations for better understanding. Prepare effectively and excel in your exam!

Multiple Choice

Which tissue is important in vitamin D metabolism?

Explanation:
Vitamin D metabolism starts in the skin. Ultraviolet B light converts 7-dehydrocholesterol in the epidermis to previtamin D3, which then becomes vitamin D3. This skin-produced vitamin D3 is carried to the liver for 25-hydroxylation and then to the kidney for 1α-hydroxylation to form the active hormone. So, the skin is the tissue that initiates vitamin D metabolism. The other tissues listed do not initiate this process.

Vitamin D metabolism starts in the skin. Ultraviolet B light converts 7-dehydrocholesterol in the epidermis to previtamin D3, which then becomes vitamin D3. This skin-produced vitamin D3 is carried to the liver for 25-hydroxylation and then to the kidney for 1α-hydroxylation to form the active hormone. So, the skin is the tissue that initiates vitamin D metabolism. The other tissues listed do not initiate this process.

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