$A$ : Diabetes insipidus is marked by excessive urination and too much thirst for water.
$R$ : Anti diuretic hormone $(ADH)$ is released by posterior lobe of pituitary gland.
$ADH$ is secreted by
Tetany $(Irregular\,\, muscle \,\,contraction)$ and osteoporosis are caused due to the deficiency of
It is amino acid derivatives
Function of hypothalamus is