ANATOMY

Detailed explanation-1: -Aldosterone is the hormone that stimulates the body to retain sodium and water. This hormone is secreted by the adrenal cortex which maintains the balance of sodium and potassium in the human body. It is responsible for the reabsorption of sodium ions and water from the kidney.

Detailed explanation-2: -Aldosterone causes an increase in salt and water reabsorption into the bloodstream from the kidney thereby increasing the blood volume, restoring salt levels and blood pressure.

Detailed explanation-3: -Aldosterone signals certain organs, like your kidneys and colon, to increase the amount of sodium they send into your bloodstream or the amount of potassium released in your urine (pee). Aldosterone’s effect on sodium increase causes your body to retain water in your blood, which increases blood volume.

Detailed explanation-4: -Aldosterone stimulates reabsorption of sodium, sustaining blood volume and pressure in the face of salt deprivation or extracellular fluid depletion. The steroid also stimulates excretion of potassium, protecting extracellular fluid from excessive levels of that ion.

Detailed explanation-5: -Aldosterone is well known to increase sodium reabsorption and potassium secretion by the kidney. It exerts its main effects on sodium and potassium balance by binding to the mineralocorticoid receptor (MCR) located in the distal convoluted tubule, connecting segment and cortical collecting duct in the kidney.