How are brain and spinal cord protected from injuries?

Explanation

The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid. This watery fluid is produced by special cells in the four hollow spaces in the brain, called ventricles. It flows through the ventricles and in spaces between the meninges. Cerebrospinal fluid also brings nutrients from the blood to the brain and removes waste products from the brain.
The spinal cord is made up of bundles of nerve fibres .It runs down from the brain through a canal in the centre of the bones of the spine or vertebral column. These bones protect the spinal cord Like the brain, the spinal cord is covered by the meninges and cushioned by cerebrospinal fluid.