Trying to create a question on how vitamin D is up taken in the body and...

Trying to create a question on how vitamin D is up taken in the body and the cycle that it plays a role in. I do not understand how its being uptaken within the body.

Expert Solution

Vitamin D

vitamin D is a fat soluble vitamin
it is a sterol, it contain steroid nucleus .
its function like a hormone

FORM OF VITAMIN D

vitamin D2 (ergocalciferol)
vitamin D3 (cholecalciferol)

VITAMIN D UPTAKEN IN THE BODY

During the course of cholesterol biosynthesis 7- dehydrocholesterol is formed as an intermiate
on the exposure to sunlight, 7 -dehyrocholesterol is converted to cholecalciferol in the skin in dermis and epidermis.
dark skin pigment (melanin) adversely influence the synthesis of cholecalciferol.
skin is thge kargest organ in the body.
the production of vitamin D in the skin is directly proposional to the exposure to sunlight and inversly proportional to the pigmentation of skin
excessive exposure to sunlight does not result in vitamin D toxicity since excess provitamin D3 are destroyed by sunlight itself.
vitamin D3 maintain a calcium level in the kidney.

ROLE AND BENEFIT OF VITAMIN D

Vitamin D help to body absorption calcium. without enough sunshine vitamin, bone can become thin, brittle.
adequate vitamin D can reduce the risk of cancer
deficency of vitamin D which can cause alzheimer disease.
low levelof vitamin D which cause heart failure with high blood pressure
without adequate vitamin D preclampsia, gestational, diabetes, caesarean section are more common.
low levelof vitamin D increase the risk of inflammation and rheumatoid arthritis.
it can modulates cell growth.
immune fuction
gene regulation

ABSORPTION

vitamin D is absorbed from the small intestine for which bile is essential.

DISTRIBUTION

stored in adipose tissue.

METABOLISM

Transpotred to the liver then kidney ,where it is activated

EXCREATION

EXCREATED IN BILE.
METABOLIZED TO WATER SOLUBLE METABOLITIES AND THEN EXCREATED IN URINE AS WELL.

gladiator answered 1 year ago

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