Which of the following is a mineralocorticoid ?

Options

A. Corstisol
B. Epinephrine
C. Noradrenaline
D. Aldosterone

Answer

To determine which of the following is a mineralocorticoid, we need to analyze the options provided: Cortisol, Epinephrine, Noradrenaline, and Aldosterone.

### Step-by-Step Solution:

1. **Understand the Definition of Mineralocorticoids**:
- Mineralocorticoids are a class of steroid hormones that are produced in the adrenal cortex. They primarily regulate the balance of minerals in the body, particularly sodium and potassium.

2. **Identify the Function of Mineralocorticoids**:
- The main function of mineralocorticoids is to influence the salt and water balance in the body. They promote sodium reabsorption and potassium excretion in the kidneys.

3. **Analyze Each Option**:
- **Cortisol**: This is a glucocorticoid, which primarily regulates metabolism and immune response, not mineral balance.
- **Epinephrine**: Also known as adrenaline, it is involved in the fight-or-flight response and does not have mineralocorticoid properties.
- **Noradrenaline**: Similar to epinephrine, it is involved in the stress response and does not function as a mineralocorticoid.
- **Aldosterone**: This is the primary mineralocorticoid hormone that regulates sodium and potassium levels in the body.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Aldosterone**, as it is the only hormone listed that is classified as a mineralocorticoid.

### Final Answer:
**Aldosterone** is a mineralocorticoid.

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