Which vitamin can be synthesized by the sun? Where is it fully activated? Vitamin D: Liver Vitamin K: Kidneys Vitamin D: Kidneys Vitamin D: Small intestine
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Now in the most active form, calcitriol acts to increase blood calcium by acting on three target organs: 1) small intestine, 2) skeleton, and 3) kidneys. Calcidiol returns to the blood once again where transport to the kidneys then allows the final conversion to calcitriol. Transported via the blood to the liver, cholecalciferol is converted to calcidiol. Sunlight contacting the epidermis converts 7-dehydrocholesterol to vitamin D, otherwise known as cholecalciferol.
Adi S.
Which of the following organs are involved in the synthesis of active vitamin D? a. heart and brain b. pancreas and kidneys c. liver and pancreas d. skin, liver, and kidneys
In humans, vitamin D can be synthesized starting in the skin by the conversion of 7-dehydrocholesterol through the actions of UV irradiation. Next, vitamin D3 is acted upon by the enzyme in the liver and then by the enzyme in the kidney. This creates the final active hormone, calcitriol, which is also known as 1,25-dihydroxyvitamin D. This active hormone interacts with the vitamin D receptor nuclear receptor protein.
Bryan V.
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