Calcium homeostasis involves parathormone (PTH), calcitonin (CT), and 1,25 OH vitamin D3 which regulate calcium levels. PTH increases calcium absorption and bone resorption to raise calcium levels, while CT decreases bone resorption to lower calcium. 1,25 OH vitamin D3 increases calcium absorption from the gut. Disruptions to these regulators can lead to pathological calcium levels.

5. ?
What is Calcium homeostasis

8. 1,25 OH Vitamin D3
Parathormone (PTH) Calcitonin (CT)

9. Parathormone (PTH) :

11. Calcitonin (CT) :

13. 1,25 OH Vitamin D3

21. Pathology