General objective of this lecture is to present on Antidiuretic Hormone Diagram. This hormone is produced by the adrenal glands which lie at the tops of the kidneys. Hormones are special chemicals which coordinate many processes in your body. Hormones are made in glands which then release them into your bloodstream. All land animals need to conserve water. This is because the external environment is usually drier than the internal environment of the animal’s body. Thus, water will tend to diffuse away from the body.