Name the hormone that helps to increase the reabsorption of water from the kidney tubules.

Vasopressin or ADH:

1. ADH (antidiuretic hormone) is a hormone secreted by the posterior pituitary gland.
2. It acts chiefly on nephrons and helps to increase the reabsorption of water from the kidney tubules.
3. It also stimulates the reabsorption of electrolytes by the distal tubules, thereby decreasing the deficiency of water through urine.
4. The deficiency of ADH causes a type of diabetes (diabetes insipidus).