| 11. | The subarachnoid space covers the brain and spinal cord.
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| 12. | The subarachnoid space contains cerebrospinal fluid ( CSF ).
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| 13. | Cerebrospinal fluid, which fills the subarachnoid space between the brain, is normally clear and colorless.
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| 14. | This arises due to rupture of the artery and accumulation of blood in the subarachnoid space.
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| 15. | With mild infiltration, tumor cells are found diffusely in the subarachnoid space from the sacral levels.
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| 16. | Instead, the entire subarachnoid space is sealed towards the nervous tissue by the glia limitans superficialis.
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| 17. | The subarachnoid space abhors all foreign body substances.
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| 18. | It circles anteriorly around the brainstem and runs forward toward the eye in the subarachnoid space.
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| 19. | If the pressure is reversed for some reason, fluid will not pass back into the subarachnoid space.
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| 20. | Rather, these subarachnoid spaces are separated from each other by a trabeculated porous wall with various-sized openings.
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