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. **Identify the Options**: The question provides us with multiple options for organs. We need to analyze each option to determine which one fits the criteria of being considered vestigial and is now confirmed as an endocrine gland.

2. **Evaluate the Thymus Gland**: The thymus gland is involved in the immune system and is located on the dorsal side of the heart. It has never been considered vestigial, so this option is incorrect.

3. **Evaluate the Pancreas**: The pancreas is a heterocrine gland that secretes insulin and digestive enzymes. It is not considered vestigial, so this option is also incorrect.

4. **Evaluate the Pineal Gland**: The pineal gland is a small gland located at the dorsal side of the forebrain. It secretes hormones such as melatonin and serotonin. Historically, it was considered vestigial, but recent studies have confirmed its role as an endocrine gland. Therefore, this option is correct.

5. **Evaluate the Pituitary Gland**: The pituitary gland is known as the master gland because it regulates various endocrine functions in the body. It is not considered vestigial, making this option incorrect.

6. **Conclusion**: Based on the evaluations, the organ that was considered vestigial until recently but is now confirmed to be an endocrine gland 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**.