Which one of the following is not a gland

Options

A. Pancreas
B. Pituitary
C. Adrenal
D. Kidney

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Glands**: Glands are specialized organs in the body that produce and release hormones or other substances. They play a crucial role in chemical coordination and regulation of various bodily functions.

2. **Identifying the Options**: The options given are:
- A) Pancreas
- B) Pituitary
- C) Adrenal gland
- D) Kidney

3. **Analyzing Each Option**:
- **Pancreas**: This is a gland that produces hormones such as insulin, which regulates blood sugar levels.
- **Pituitary Gland**: Known as the "master gland," it controls other glands and regulates various physiological processes.
- **Adrenal Gland**: This gland produces hormones that help regulate metabolism, immune response, and stress responses.
- **Kidney**: This is primarily an excretory organ that filters blood to produce urine and does not primarily function as a gland.

4. **Conclusion**: Among the options, the kidney is not a gland. It is an organ involved in the excretory system, while the other three options (pancreas, pituitary, and adrenal) are all glands.

5. **Final Answer**: Therefore, the correct answer is option D) Kidney, as it is not a gland.

---