Final answer:
Aldosterone is a hormone released from the adrenal cortex that regulates sodium levels in the blood and affects osmotic balance. It is secreted in response to low blood sodium, low blood pressure, low blood volume, and high blood potassium levels.
Step-by-step explanation:
Aldosterone is a hormone released from the adrenal cortex that regulates sodium levels in the blood and affects osmotic balance. It is responsible for reabsorbing sodium from the renal tubules and managing water levels in body fluids.
The secretion of aldosterone is induced by various factors, including low blood sodium, low blood pressure, low blood volume, and high blood potassium levels.