What is the primary action of aldosterone?

What is the primary action of aldosterone?

Step 1: Understand that aldosterone is a hormone produced by the adrenal glands.
Step 2: Know that aldosterone's main job is to help control the balance of sodium and potassium in the body.
Step 3: Recognize that aldosterone acts on the kidneys, which are responsible for filtering blood and producing urine.
Step 4: Learn that when aldosterone is released, it signals the kidneys to reabsorb more sodium from the urine back into the blood.
Step 5: Understand that as sodium is reabsorbed, water follows it, leading to increased water retention in the body.
Step 6: Realize that this process can also cause potassium to be excreted more, leading to lower potassium levels in the blood.

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