Function of cerebro -spinal fluid is

Options

A. Nourishment
B. Shock absorption
C. Collection of waste products
D. All the above

Answer

### Step-by-Step Solution

1. **Definition of Cerebrospinal Fluid (CSF)**:
- Cerebrospinal fluid is a clear, colorless liquid that surrounds the brain and spinal cord. It is often referred to as filtered plasma due to its composition.

2. **Protection**:
- One of the primary functions of CSF is to protect the brain and spinal cord from physical shocks. It acts as a cushion, absorbing impacts and preventing injury.

3. **Nourishment**:
- CSF provides essential nutrients to the brain and spinal cord tissues. It helps in delivering glucose and other necessary substances that are vital for the functioning of neural tissues.

4. **Waste Removal**:
- CSF also plays a crucial role in the removal of waste products from the brain and spinal cord. It collects metabolic waste that is produced by the neural tissues and helps in their excretion.

5. **Conclusion**:
- Given the functions of cerebrospinal fluid, it serves multiple purposes: protection, nourishment, and waste collection. Therefore, the correct answer to the question about the functions of cerebrospinal fluid is "all of the above."