Final answer:
Aldosterone increases sodium reabsorption in the kidneys, impacting water retention, blood volume, and pressure.
Explanation:
Aldosterone is a hormone that increases sodium reabsorption in the kidneys, primarily in the distal convoluted tubules and collecting ducts. This reabsorption process leads to the retention of water and an increase in blood volume and pressure. Aldosterone plays a crucial role in maintaining electrolyte balance in the body through its effects on sodium and potassium levels.
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