The Metabolism and Actions of Vitamin D - Flowchart
The Metabolism and Actions of Vitamin D - Flowchart Vitamin D Deficiency Vitamin D Deficiency
«Flowchart»

Start

Start

Start

Diet

Diet

Diet

7-Dehydrocholesterol

7-Dehydrocholesterol

7-Dehydrocholesterol

Cholecalciferol (D3)

Cholecalciferol (D3)

Cholecalciferol (D3)

3

End

End

End

Sunlight (UV) !!sunr!!

Skin

Sunlight (UV) !!sunr!!

Skin

Sunlight (UV) !!sunr!!

Skin

!!liver!! Liver

!!liver!! Liver

!!liver!! Liver

25-Hydroxy-D3

25-Hydroxy-D3

25-Hydroxy-D3

3

Gut Ca2+ absorption

Bone calcification

Bone resorption

Gut Ca2+ absorption

Bone calcification

Bone resorption

Gut Ca2+ absorption

2+

Bone calcification

Bone resorption

+ve PTH

PO4

!!kidney!! Kidney

+ve PTH

PO4

!!kidney!! Kidney

+ve PTH

PO4

4

!!kidney!! Kidney

1,25-Dihydroxy-D3

1,25-Dihydroxy-D3

3 1,25-Dihydroxy-D(3)

24,25-Dihydroxy-D3

24,25-Dihydroxy-D3

3 24,25-Dihydroxy-D(3)