Which of the following describes a function of cerebrospinal fluid?

1. Maintain optimum ionic environment

2. Maintain pH homeostasis

3. Provide circulation for exchange of nutrients/wastes

4. Serve as a shock absorbing fluid system of spinal cord

5. Provide buoyancy of the brain

1, 2, 3, 4, 5 is the correct answer.

Explanation:

Cerebrospinal fluid is present in the spinal cord and it encompasses the brain.

The main functions of the Cerebrospinal fluid are

To protect the brain and spinal cord from shock. To provide nutrients to a nervous system. To remove the waste products from a cerebral metabolism. To filter the chemicals from the blood. It controls constant pressure between the brain and skull. It regulates the pH homeostasis. It provides the brain to control its density.