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Calcitriol
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∙ 11y ago
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What hormone does the skin produce?
The answer is vitamin D. In presence of ultraviolet rays cholesterol is converted to vitamin D in the skin. One hydrogen atom is attached to it in liver and second in kidney to form active form of vitamin D.
What is calcitriol?
In presence of ultraviolet rays of sun Cholesterol in skin is converted to Cholecalciferol. then in Liver it get converted to 25 Cholecalciferol. then in kidney, it get converted to 1,25 Cholecalciferol. Which is active form of Vitamin D. Also called as Calitriol. If execass of Vitamin 'D' is ingested as in Cod Liver intake, then body converts it into 24, 25 cholecalciferol, which is almost inactive form of Vitamin 'D'. You have almost no Vitamin 'D' in diary food or any other food. So almost all people have subclinical vitamin 'D' deficiency, except people living in polar area. (Who almost never get heart attack.) so Vitamin 'D' should be added by government in food. Calcitriol deposites calcium salt in bones, enhance absorption of calcium salts from intestine, Reabsorbs calcium ion from kidney.
In hypervitaminosis A D why does calcium deposit in kidney and not in liver and why does vit A store in liver and not in kidney?
The body stores excessive Vitamin A in the liver for later use if needed. Vitamin D however needs to be converted to a different form to be biologically active. This conversion after it leaves the liver, occurs in the kidney where it is converted to 1,25-dihydroxycholecalciferol, a biologically active form.
What causes vitamin D production?
The Sun gives off light. The body uses light to convert 7-dehydrocholesterol into pre-vitamin D3. Pre-vitamin D3 forms in to cholecalciferol, vitamin D3. Vitamin D3 is brought to the liver were it forms 25-hydroxyvitamin D. Finally, it is brought to the kidney to form 1,25-dihydroxyvitamin D, the active form of vitamin D.
How does the excretory system help in homeostasis?
Excretory system is one of the main organ for haemostasis. It regulates the water balance, pH balance, salt balance. It regulates the blood pressure. It regulates the haemopoiesis. It produce active form of vitamin D. Vitamin D is responsible for calcium metabolism.
What is the active form of Vitamin D?
Calcitriol
Does the liver synthesize vitamin D?
The skin, liver, and kidneys participate in synthesizing the active form of vitamin D.
What is locally regulated in the blood by the active form of vitamin D?
calcium
Do the kidneys convert vitamin D to its inactive or active form?
yes
What is the primary active form of vitamin d in the human body?
Calcitriol
What convert vitamin D to its active form?
the liver and the kidney
What hormone does the skin produce?
The answer is vitamin D. In presence of ultraviolet rays cholesterol is converted to vitamin D in the skin. One hydrogen atom is attached to it in liver and second in kidney to form active form of vitamin D.
What vitamin is released by kidneys?
the active form of Vitamin D in the form of 1,25-dihydrocholecaciferol is released from the kidney.written by robal lacoul, hope it would provide some help
What vitamin is considered the sunshine vitamin because it is derived from the sun?
Vitamin D comes from sunshine exposure and works with the mineral calcium. "Sunshine vitamin" is the nickname for vitamin D because the human body produces vitamin D through exposure to the UV rays of the Sun.
What is calcitriol?
In presence of ultraviolet rays of sun Cholesterol in skin is converted to Cholecalciferol. then in Liver it get converted to 25 Cholecalciferol. then in kidney, it get converted to 1,25 Cholecalciferol. Which is active form of Vitamin D. Also called as Calitriol. If execass of Vitamin 'D' is ingested as in Cod Liver intake, then body converts it into 24, 25 cholecalciferol, which is almost inactive form of Vitamin 'D'. You have almost no Vitamin 'D' in diary food or any other food. So almost all people have subclinical vitamin 'D' deficiency, except people living in polar area. (Who almost never get heart attack.) so Vitamin 'D' should be added by government in food. Calcitriol deposites calcium salt in bones, enhance absorption of calcium salts from intestine, Reabsorbs calcium ion from kidney.
What is locally regulated in the blood by the active form of vitamin D which acts as a cofactor?
Ionic calcium: Calcium absorption is closely related to blood levels of ionic calcium. It is locally regulated by the active form of Vitamn D, which promotes active calcium absorption. pg 900 Anatomy Book
Can vitamin d be characterized as a vitamin?
Yes, why else would it be called vitamin D if not?
