What effect does aldosterone have on the kidneys?

Practice Questions

Q1
What effect does aldosterone have on the kidneys?
  1. Increases sodium reabsorption
  2. Decreases potassium reabsorption
  3. Increases water excretion
  4. Decreases blood pressure

Questions & Step-by-Step Solutions

What effect does aldosterone have on the kidneys?
  • Step 1: Aldosterone is a hormone produced by the adrenal glands.
  • Step 2: When aldosterone reaches the kidneys, it binds to specific receptors in the kidney cells.
  • Step 3: This binding signals the kidneys to reabsorb more sodium from the urine back into the blood.
  • Step 4: As sodium is reabsorbed, water follows it due to osmosis, leading to more water being retained in the body.
  • Step 5: The increased amount of sodium and water in the blood raises blood volume.
  • Step 6: Higher blood volume results in increased blood pressure.
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