Identify the correct statements from the following.

Options

A. Pancreas is purely endocrine gland.
B. Testosterone is female sex hormone.
C. Prolactin is released by posterior pituitary
D. Thyroxin hormone control basal metabolic activity.

Explanation

To identify the correct statements from the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Examine Option 1**:
- Statement: "Pancreas is purely endocrine gland."
- Analysis: This statement is incorrect. The pancreas is classified as a heterocrine gland because it has both endocrine (hormonal) and exocrine (enzyme-secreting) functions. It secretes insulin and glucagon (endocrine) and digestive enzymes (exocrine).
- Conclusion: **Incorrect**

2. **Examine Option 2**:
- Statement: "Testosterone is a female sex hormone."
- Analysis: This statement is also incorrect. Testosterone is primarily a male sex hormone, responsible for the development of male secondary sexual characteristics. The primary female sex hormones are estrogen and progesterone.
- Conclusion: **Incorrect**

3. **Examine Option 3**:
- Statement: "Prolactin is released by the posterior gland."
- Analysis: This statement is incorrect. Prolactin is a hormone that promotes milk production and is released from the anterior pituitary gland, not the posterior gland.
- Conclusion: **Incorrect**

4. **Examine Option 4**:
- Statement: "Thyroxine hormone is controlled by basal metabolic activity."
- Analysis: This statement is correct. Thyroxine (T4) is produced by the thyroid gland and plays a crucial role in regulating the basal metabolic rate (BMR) of the body.
- Conclusion: **Correct**

### Final Assessment:
- **Option 1**: Incorrect
- **Option 2**: Incorrect
- **Option 3**: Incorrect
- **Option 4**: Correct

### Answer:
The only correct statement is **Option 4**: "Thyroxine hormone is controlled by basal metabolic activity."