Which of the following is the effect of aldosterone secretion on electrolyte levels?

The correct answer is ✅ Sodium levels are increased.

💡 Step-by-step explanation:

1. Aldosterone is a hormone produced by the adrenal cortex (part of the adrenal glands).

2. Its main function is to regulate electrolyte and fluid balance by acting on the kidneys.

3. When aldosterone is secreted:

   • The kidneys reabsorb more sodium (Na⁺) back into the blood.

   • Water follows sodium, which helps raise blood volume and pressure.

   • At the same time, potassium (K⁺) is excreted in the urine.

 Aldosterone is secreted when a drop in extracellular sodium occurs. This hormone’s effect on the kidneys causes the kidneys to retain sodium and return it to the blood.

Question: 36 of 70

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Which of the following is the effect of aldosterone secretion on electrolyte levels?

Calcium levels are decreased.

Sodium levels are increased.

Potassium levels are increased.

Magnesium levels are decreased