MICROANATOMY

Detailed explanation-1: -Antidiuretic hormone binds to receptors on cells in the collecting ducts of the kidney and promotes reabsorption of water back into the circulation.

Detailed explanation-2: -ADH primarily affects the ability of the kidney to reabsorb water; when present, ADH induces expression of water transport proteins in the late distal tubule and collecting duct to increase water reabsorption.

Detailed explanation-3: -The main action of ADH in the kidney is to regulate the volume and osmolarity of the urine. Specifically, it acts in the distal convoluted tubule (DCT) and collecting ducts (CD). During states of increased plasma osmolality, ADH secretion is increased.

Detailed explanation-4: -ADH increases water reabsorption by increasing the nephron’s permeability to water, while aldosterone works by increasing the reabsorption of both sodium and water.