what hormones are important for fluid homeostasis
The two most important hormones for maintaining calcium levels in the body are parathyroid hormone (PTH) and 1,25(OH)2D (the active form of vitamin D). The major regulator is PTH, which is part of a negative feedback loop to maintain [Ca ++ ] ECF (see Humoral regulation).alcium homeostasis refers to the regulation of the concentration of calcium ions in the extracellular fluid [Ca++]ECF. This parameter is tightly controlled because the calcium ions have a stabilizing effect on voltage-gated ion channels.