| 单词 | cholecalciferol |
| 例句 | In the presence of sunlight, a form of vitamin D3 called cholecalciferol is synthesized from a derivative of the steroid cholesterol in the skin. Anatomy and Physiology 2013-06-19T00:00:00Z When we are talking about vitamin D in humans, what we really mean is Vitamin D3, also known as cholecalciferol. Cholesterol: Friend Before Foe 2011-09-14T14:15:00.253Z In the liver, cholecalciferol is converted to an intermediate that travels to the kidneys and is further converted to calcitriol, the active form of vitamin D3. Anatomy and Physiology 2013-06-19T00:00:00Z When cholesterol present in the epidermis is exposed to ultraviolet radiation, it is converted to cholecalciferol, which then enters the blood. Anatomy and Physiology 2013-06-19T00:00:00Z |
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