Ca ++ and P i Homeostasis. Ca ++ in the plasma [Ca ++ ] in plasma: 2.5 mM, of which about ½ is bound and thus physiologically inactive. Ratio of free/bound.
![Ca ++ and P i Homeostasis. Ca ++ in the plasma [Ca ++ ] in plasma: 2.5 mM, of which about ½ is bound and thus physiologically inactive. Ratio of free/bound.](https://static.fdocuments.us/doc/330x215/56649c8e5503460f9494704c/ca-and-p-i-homeostasis-ca-in-the-plasma-ca-in-plasma-25-mm.jpg)
