The surgical removal of the pituitary gland: "The hypophysectomy of the pituitary gland takes place in the middle of the head where it consists of two main lobes, the anterior (front) lobe, secreting most of the hormones; and the posterior (back) lobe which stores and releases neurohormones received from the hypothalamus which functions to regulate body temperature, water balance, sugar and fat metabolism, and the secretion of releasing and inhibiting of hormones."