Which of the following option explains the correct function of cortisol ?

Options

A. Reabsorption of `Na^(+)` and water and excretion of `K^(+)` and phosphate ions.
B. To produce anti-inflammatory reactions
C. To carry out glycolysis, lipogenesis, and proteolysis.
D. To increase cellular uptake and utilization of amino acids.

Answer

To determine the correct function of cortisol from the provided options, we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Cortisol**:
- Cortisol is a steroid hormone classified as a glucocorticoid.
- It is primarily produced in the zona fasciculata of the adrenal cortex.

2. **Evaluating the First Option**:
- The first option states that cortisol is responsible for the reabsorption of Na+ and water, and the excretion of K+ and phosphate ions.
- While cortisol can influence fluid and electrolyte balance, it does not directly mediate the reabsorption of sodium and water or the excretion of potassium. Therefore, this option is **incorrect**.

3. **Evaluating the Second Option**:
- The second option claims that cortisol produces an anti-inflammatory reaction.
- Cortisol is known for its anti-inflammatory properties, as it helps to reduce inflammation and controls the effects of salt and water retention. This option is **correct**.

4. **Evaluating the Third Option**:
- The third option suggests that cortisol carries out glycolysis, lipogenesis, and proteolysis.
- Cortisol does not promote glycolysis; instead, it decreases glucose uptake in muscle cells and promotes gluconeogenesis. Therefore, this option is **incorrect**.

5. **Evaluating the Fourth Option**:
- The fourth option states that cortisol increases cellular uptake and utilization of amino acids.
- Cortisol actually promotes protein degradation, which does not lead to an increase in cellular uptake or utilization of amino acids. Thus, this option is also **incorrect**.

6. **Conclusion**:
- After evaluating all options, the correct function of cortisol is to produce an anti-inflammatory reaction.

### Final Answer:
The correct function of cortisol is to produce anti-inflammatory reactions.

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