KERMOAL / BSIP / SCIENCE PHOTO LIBRARY KERMOAL / BSIP / SCIENCE PHOTO LIBRARY
Spinal cord membrane anatomy. Artwork of a section of the spinal cord (white and grey), showing the meninges (membranes) that enclose it. The spinal cord, like the brain, is part of the central nervous system (CNS), and the same three membranes enclose both. These are, from inner to outer (top to bottom in this view): the pia mater (green), the arachnoid mater (purple), and the dura mater (green). Spinal nerves (yellow) branch off from the spinal cord. The space between the pia mater and arachnoid mater (the subarachnoid space) contains cerebrospinal fluid and arteries (red) and veins (blue), part of the blood-brain barrier.
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