Which of the following is a hormone responsible for the regulation of blood glucose level ?

Options

A. Tetraiodothyroine and triiodothyronine
B. Trihydroxyidothyronine and thymosin
C. Aldosterone and calcitonin
D. Androgen and FSH

Answer

To determine which hormone is responsible for the regulation of blood glucose levels, we can analyze the options provided in the question.

### Step-by-Step Solution:

1. **Identify the Hormones in Each Option**:
- **Option 1**: Tetrahydrothyronine (T4) and Trihydrothyronine (T3)
- **Option 2**: Trihydroxyhydrothyronine and Thymosine
- **Option 3**: Aldosterone and Calcitonin
- **Option 4**: Androgen and FSH (Follicle Stimulating Hormone)

2. **Understand the Functions of Each Hormone**:
- **Tetrahydrothyronine (T4) and Trihydrothyronine (T3)**: These hormones are produced by the thyroid gland and primarily regulate the basal metabolic rate and influence the metabolism of carbohydrates, proteins, and fats. They do have a role in glucose metabolism but are not the primary regulators of blood glucose levels.
- **Thymosine**: This hormone is produced by the thymus gland and is mainly involved in immune function. It does not regulate blood glucose levels.
- **Aldosterone**: This is a mineralocorticoid hormone produced by the adrenal glands that regulates sodium and potassium levels, but it does not directly regulate blood glucose levels.
- **Calcitonin**: This hormone is produced by the thyroid gland and helps regulate calcium levels in the blood, not glucose levels.
- **Androgens**: These are male sex hormones that do not play a direct role in glucose regulation.
- **FSH (Follicle Stimulating Hormone)**: This hormone is involved in reproductive processes and does not regulate blood glucose levels.

3. **Identify the Main Hormones for Blood Glucose Regulation**:
- The primary hormones responsible for regulating blood glucose levels are **insulin** and **glucagon**, both of which are produced by the pancreas. Insulin lowers blood glucose levels, while glucagon raises them.

4. **Conclusion**:
- None of the options provided in the question directly include insulin or glucagon. However, among the options, T3 and T4 (Option 1) are the closest as they influence carbohydrate metabolism, even though they are not the primary regulators of blood glucose levels.

### Final Answer:
The hormone responsible for the regulation of blood glucose level is **insulin** and **glucagon**, which are not listed in the options. However, if we must choose from the given options, **Option 1 (Tetrahydrothyronine and Trihydrothyronine)** is the most relevant.