Which of the following is the correct sequence of events leading to the polyuria and dehydration associated with diabetes mellitus?
1) Increased blood glucose levels stimulate osmoreceptors in the hypothalamus
2) Osmoreceptors stimulate the release of antidiuretic hormone (ADH) from the posterior pituitary gland
3) ADH acts on the kidneys to increase water reabsorption
4) Increased water reabsorption leads to decreased urine output and concentrated urine
5) High blood glucose levels also lead to increased urine output
6) Polyuria and dehydration occur as a result of increased urine output and decreased water reabsorption