National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Vitamin D is mainly activated in which organ?

Skin
Kidney
Liver
Heart

The correct answer is: Liver

Vitamin D is primarily activated in the liver, not the skin, kidney, or heart. The skin produces a precursor form of vitamin D when exposed to UV radiation, but it is ultimately activated in the liver. The kidney is responsible for converting vitamin D into its active form, but it does not activate vitamin D itself. The heart does not play a role in activating vitamin D. Therefore, the correct answer is C, the liver.