ANATOMY

Detailed explanation-1: -The principal action of ADH is to regulate the amount of water excreted by the kidneys. As ADH (which is also known as vasopressin) causes direct water reabsorption from the kidney tubules, salts and wastes are concentrated in what will eventually be excreted as urine.

Detailed explanation-2: -ADH directly increases the tubules’ reabsorption of water by opening pores in the epithelial cells of the kidneys, whereas aldosterone indirectly increases the water reabsorption of the tubules by creating an osmotic pressure through increasing the activity of sodium pumps.

Detailed explanation-3: -ADH increases water reabsorption by increasing the nephron’s permeability to water, while aldosterone works by increasing the reabsorption of both sodium and water.

Detailed explanation-4: -Action. 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).

Detailed explanation-5: -Your hypothalamus, an area at the base of your brain, produces ADH. Sensors in your body detect when your blood volume changes and needs more ADH. These sensors talk to your brain and the pituitary gland releases ADH into your bloodstream.