calcium metabolism Flashcards
phosphate: recall the regulation of phosphate reabsorption
1
Q
what hormones causes reabsorption of PO4 3-
A
calcitriol (active form of vitamin D3)
2
Q
what is the function of calcitriol
A
maintain bone so reabsorbs Ca2+ and PO4 3-
3
Q
what stops reabsorption of PO4 3-
A
fibroblast growth factor 23 (direct negative feedback on calcitriol)