A nurse educator is explaining basic neuroanatomy to a class of prospective nursing students. Which statement best conveys an aspect of the role of cerebrospinal fluid (CSF)?It provides physical protection for the brain and ensures leukocytes and erythrocytes are evenly distributed in the CNS.CSF cushions the brain and provides a near-water medium for diffusion of nutrients.CSF distributes plasma proteins throughout the superficial gray matter of the CNS.It ensures the high metabolic and oxygenation needs of the brain are met, as well as absorbing physical shocks.

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