If aldosterone secretion increases

Options

A. Acidosis results
B. blood volume increases
C. blood sodium levels decreases
D. blood potassium levels increases

Answer

**Step-by-Step Solution:**

1. **Understand Aldosterone Function**: Aldosterone is a hormone secreted by the zona fasciculata of the adrenal cortex. Its primary function is to regulate sodium and potassium levels in the body.

2. **Identify the Effects of Increased Aldosterone**: When aldosterone secretion increases, it leads to increased reabsorption of sodium ions (Na+) in the kidneys, specifically in the distal convoluted tubule (DCT).

3. **Analyze the Impact on Blood Volume**: The reabsorption of sodium ions causes water to follow osmotically. This results in an increase in blood volume because more water is retained in the bloodstream.

4. **Consider the Effects on Blood Sodium Levels**: Since aldosterone promotes sodium reabsorption, the sodium levels in the blood will not decrease; instead, they will remain stable or increase.

5. **Evaluate the Impact on Blood Potassium Levels**: Increased sodium reabsorption is often accompanied by a decrease in potassium reabsorption, leading to a reduction in blood potassium levels. Therefore, blood potassium levels do not increase.

6. **Conclusion**: Based on the above analysis, the only correct statement regarding the effects of increased aldosterone secretion is that blood volume increases.

**Final Answer**: The correct answer is that blood volume increases.

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