Exposure to ultraviolet light directly facilitates which of the following?
Ultraviolet light absorbed by the skin directly facilitates conversion of cholesterol to 25-hydroxycholecalciferol.
Conversion of 7 dehydrocholesterol to 25-hydroxycholecalciferol
Conversion of 25-hydroxycholecalciferol to 1,25- dihydroxycholecalciferol
Transpo of calcium into the extracellular fluid
Formation of calcium-binding protein
Endocrine System