What do the meninges and the cerebrospinal fluid have in common?

The correct answer is:

Both are involved in protecting the brain.

Meninges are membranes that envelop the brain, and cerebrospinal also has to do with the brain, since cerebrum in Latin means brain.

Explanation:

The main function of the meninges and of the cerebrospinal fluid is to preserve the central nervous system. The pia mater is the meningeal covering that substantially adheres to the surface of the brain and spinal cord. Cerebrospinal fluid is a transparent liquid provided within spaces in the brain called ventricles. The meninges are three layers of protecting tissue called the dura mater, arachnoid mater, and pia mater that circle the neuraxis.

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where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?