Expand CNS

Answer

**Step-by-Step Solution:**

1. **Identify the acronym:** The question asks to expand the acronym "CNS."

2. **Recall the full form:** The full form of CNS is "Central Nervous System."

3. **Define CNS:** The Central Nervous System acts as the processing center of the body, coordinating and integrating information.

4. **Components of CNS:** The CNS consists of two main components: the brain and the spinal cord.

5. **Protection of CNS:** Both the brain and spinal cord are protected by three layers known as meninges.

6. **Final Answer:** Therefore, the full form of CNS is "Central Nervous System."

---