Explain two functions of cerebrospinal fluid.

Explanation

**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 located in the subarachnoid space, which is the area between the brain and the skull, as well as around the spinal cord.

2. **Function 1 - Protection**:
One of the primary functions of cerebrospinal fluid is to protect the brain and spinal cord from mechanical injuries. It acts as a cushion, absorbing shocks and preventing damage from impacts or sudden movements.

...