Which one of the followings is not a function of `T_(4)`

Options

A. Erythropoiesis
B. Maintainance of water and electrolyte balance
C. Enhances oxygen consumption
D. Stimulates cell division in epiphyseal plates of bone

Answer

To answer the question "Which one of the following is not a function of T4?", we will analyze the functions of the thyroxine hormone (T4) and identify the incorrect option.

### Step-by-Step Solution:

1. **Understand T4 (Thyroxine Hormone)**:
- T4, also known as thyroxine, is a hormone produced by the thyroid gland. It plays a crucial role in various metabolic processes in the body.

2. **Evaluate the Given Options**:
- We need to evaluate each option provided in the question to determine whether it is a function of T4 or not.

3. **Option 1: Erythropoiesis**:
- Erythropoiesis is the process of red blood cell formation. T4 stimulates the biosynthesis of hemoglobin, which is essential for erythropoiesis. Therefore, this is a function of T4.

4. **Option 2: Maintenance of Water and Electrolyte Balance**:
- T4 is involved in metabolic activities that help maintain water and electrolyte balance in the body. Thus, this is also a function of T4.

5. **Option 3: Enhance Oxygen Consumption**:
- T4 increases the metabolic rate, which leads to an increase in oxygen consumption. This is indeed a function of T4.

6. **Option 4: Stimulates Cell Division of Epiphyseal Plate of Bone**:
- This function is incorrect. The stimulation of cell division at the epiphyseal plate of bones is primarily the role of growth hormone (GH), not T4. Therefore, this is not a function of T4.

7. **Conclusion**:
- The option that is not a function of T4 is the stimulation of cell division of the epiphyseal plate of bone.

### Final Answer:
The function that is not associated with T4 is **"Stimulates the cell division of epiphyseal plate of bone."**

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