Aldosterone functions to increase sodium reabsorption.
Explanation:
Aldosterone, secreted by adrenal cortex is the major mineralocorticoid .
It mainly function in the homeostasis of sodium and potassium ions.
It also helps in the maintenance of  electrolytes, body fluid volume, osmotic pressure and blood pressure.
Aldosterone primarily functions on the kidneys to promote absorption of sodium and excretion of potassium..
Increase in sodium levels in the blood promotes water retention and  increases blood volume.
In absence of aldosterone sodium is excreted through urine, the blood volume decreases  and so the blood pressure too.
Answer: Aldosterone increase sodium reabsorption presence.
Explanation:
Aldosterone is a steroid hormone that is secreted by the adrenal cortex of Adrenal gland, above the kidney.
Aldosterone cause increase in salt and reabsorption of water into the blood from Kidney which restore salt level, increase volume of blood and blood pressure. If there is decrease in blood pressure, Adrenal gland is stimulated by stretch receptors to release adolsterone which increase sodium reabsorption from the urine, sweat and gut.
