What is the role of aldosterone in renal physiology?

What is the role of aldosterone in renal physiology?

Step 1: Understand that aldosterone is a hormone produced by the adrenal glands.
Step 2: Know that aldosterone acts on the kidneys, specifically on the nephrons, which are the functional units of the kidneys.
Step 3: Recognize that aldosterone promotes the reabsorption of sodium (Na+) from the urine back into the blood.
Step 4: Realize that when sodium is reabsorbed, water follows it due to osmosis, which helps to increase blood volume.
Step 5: Understand that increased blood volume can lead to higher blood pressure.
Step 6: Conclude that aldosterone plays a key role in regulating both blood pressure and fluid balance in the body.

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