Which one of the following hormones also produces: anti-inflammatory reactions in man and suppresses the immune response in addition to its primary functions?
(a) Cortisol
(b) Thymosin
(c) Thyrocalcitonin
(d) Erythropoietin

Options

A. Cortisol
B. Thymosin
C. Thyrocalcitonin
D. Erythropoietin.

Answer

To solve the question regarding which hormone produces anti-inflammatory reactions and suppresses the immune response in addition to its primary functions, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a hormone that has anti-inflammatory properties and also suppresses the immune response, in addition to its primary functions.

2. **Analyze Each Option**:
- **(a) Cortisol**: This hormone is known for its powerful anti-inflammatory effects. It helps to reduce redness and swelling in inflamed areas. Additionally, cortisol suppresses the immune response by reducing the multiplication of lymphocytes (a type of white blood cell).
- **(b) Thymosin**: This hormone is primarily involved in the development and differentiation of T-cells (a type of lymphocyte) but does not have significant anti-inflammatory properties or immune suppression effects.
- **(c) Thyrocalcitonin**: This hormone regulates calcium levels in the body and does not have any known anti-inflammatory or immune suppression functions.
- **(d) Erythropoietin**: This hormone is mainly responsible for the production of red blood cells and does not play a role in inflammation or immune response suppression.

3. **Identify the Correct Answer**: Based on the analysis, cortisol (option a) is the only hormone that fits the criteria of having anti-inflammatory properties and suppressing the immune response.

4. **Conclusion**: Therefore, the correct answer is **(a) Cortisol**.