2.75: Describe the Role of ADH in Regulating the Water Content of the Blood

ADH: Produced by the Pituitary Gland and Affects the Permeability of the Collecting Duct to Reabsorb Water Back into the Blood to Regulate Water Levels in the Body

LOW LEVELS OF WATER	HIGH LEVELS OF WATER
Diagram Showing Osmoregulation when Water Levels in the Body is Low	Diagram Showing Osmoregulation when Water Levels in the Body is High
Low Levels of Water in the Body, Hypothalamus Detects this Hypothalamus Stimulates Pituitary Gland to Produce More ADH More ADH causes the Membrane of the Collecting Duct (In Kidney)  to become More Permeable, Allowing More Absorption of Water by Osmosis More Water Reabsorbed into the Blood at Collecting Duct Water Levels in the Body is Regulated, Urine Becomes more Concentrated	High Levels of Water in the Body, Hypothalamus Detects this Hypothalamus Stimulates Pituitary Gland to Produce Less ADH Less ADH causes the Membrane of the Collecting Duct (In Kidney) to become Less Permeable, Allowing Less Absorption of Water by Osmosis Less Water Reabsorbed into the Blood at Collecting Duct Water Levels in the Body is Regulated, Urine Becomes more Dilute