Brain and nervous tissue
Brain and spinal cord can easily be reached through the cerebrospinal fluid within the spinal cord and the meninges. CSF is secreted by cerebral vessels and the choroid plexuses. It is secreted into the fourth ventricle from where it enters the subarachnoid cistern where it bathes the brain and the spinal cord reaching up to the S2 vertebra although the spinal cord ends at the level of L2 vertebra.
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Electronic School of Medicine
Creator: Oluwole Ogunranti