ADH is produced in which part of the body?

The antidiuretic hormone (ADH), also known as vasopressin, is produced in the hypothalamus, which is located at the base of the brain. This hormone plays a crucial role in regulating the body's water balance by influencing the reabsorption of water in the kidneys. While the kidneys are responsible for responding to ADH to concentrate urine and retain water, they do not produce the hormone itself.

The hypothalamus synthesizes ADH, and it is then transported to the posterior pituitary gland, where it is stored and released into the bloodstream when needed. This process is essential for maintaining homeostasis, especially in regulating blood volume and osmolarity.

Other options given do not produce ADH. The liver is involved in various metabolic processes, including the handling of substances like glucose and the production of certain proteins, but it does not produce ADH. The pancreas is primarily responsible for the production of insulin and glucagon, hormones that regulate blood sugar levels. Thus, the hypothalamus is the correct answer as it is the site of ADH production.