The organ which was considered vestigial till recently but now confirmed to be endorcine gland is

Options

A. thymus
B. Pancreas
C. Pineal
D. Pituitary

Answer

To solve the question regarding the organ that was considered vestigial but is now confirmed to be an endocrine gland, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for an organ that was once thought to be vestigial but has now been confirmed to have an endocrine function.

2. **Analyzing the Options**: The options provided are:
- Thymus
- Pancreas
- Pineal gland
- Pituitary gland

3. **Evaluating Each Option**:
- **Thymus**: The thymus is known to play a crucial role in the immune system, particularly in the maturation of T lymphocytes. It is not considered vestigial; hence, this option is incorrect.

- **Pancreas**: The pancreas functions as both an exocrine and an endocrine gland, secreting important hormones like insulin and glucagon. It has always been recognized for its vital role in digestion and metabolism, so it is not vestigial. This option is also incorrect.

- **Pineal Gland**: The pineal gland was historically thought to be vestigial, but it has been confirmed to secrete the hormone melatonin, which regulates sleep patterns and circadian rhythms. This gland's endocrine function has been established, making it a strong candidate for the correct answer.

- **Pituitary Gland**: The pituitary gland is known as the "master gland" because it regulates various hormonal functions in the body. It has never been considered vestigial, so this option is incorrect.

4. **Conclusion**: After evaluating all the options, the pineal gland is the organ that was considered vestigial until its endocrine function was confirmed. Therefore, the correct answer is the **Pineal Gland**.

### Final Answer:
The organ which was considered vestigial till recently but now confirmed to be an endocrine gland is the **Pineal Gland**.