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  2. Subarachnoid hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Subarachnoid_hemorrhage

    Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. [1] Symptoms may include a severe headache of rapid onset , vomiting, decreased level of consciousness , fever , weakness, numbness, and sometimes seizures . [ 1 ]

  3. Meninges - Wikipedia

    en.wikipedia.org/wiki/Meninges

    The subarachnoid space is the space that normally exists between the arachnoid and the pia mater. It is filled with cerebrospinal fluid and continues down the spinal cord . Spaces are formed from openings at different points along the subarachnoid space; these are the subarachnoid cisterns , which are filled with cerebrospinal fluid.

  4. Subarachnoid cisterns - Wikipedia

    en.wikipedia.org/wiki/Subarachnoid_cisterns

    The subarachnoid cisterns are spaces formed by openings in the subarachnoid space, an anatomic space in the meninges of the brain. [1] The space is situated between the two meninges, the arachnoid mater and the pia mater. These cisterns are filled with cerebrospinal fluid (CSF). [1]

  5. Intracranial hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intracranial_hemorrhage

    A subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Trauma can also cause SAH when the arteries and veins coursing through the subarachnoid space are ruptured.

  6. Arachnoid mater - Wikipedia

    en.wikipedia.org/wiki/Arachnoid_mater

    The arachnoid mater covering the brain is referred to as the arachnoidea encephali, and the portion covering the spinal cord as the arachnoidea spinalis. The arachnoid and pia mater are sometimes considered as a single structure, the leptomeninx, or the plural version, leptomeninges (lepto, from the Greek root meaning "thin" or "slender").

  7. Pia mater - Wikipedia

    en.wikipedia.org/wiki/Pia_mater

    Pia mater is medieval Latin meaning "tender mother". [1] The other two meningeal membranes are the dura mater and the arachnoid mater. Both the pia and arachnoid mater are derivatives of the neural crest while the dura is derived from embryonic mesoderm. The pia mater is a thin fibrous tissue that is permeable to water and small solutes.

  8. Subdural hematoma - Wikipedia

    en.wikipedia.org/wiki/Subdural_hematoma

    Acute subdural hematoma is usually caused by external trauma that creates tension in the wall of a bridging vein as it passes between the arachnoid and dural layers of the brain's lining—i.e., the subdural space. The circumferential arrangement of collagen surrounding the vein makes it susceptible to such tearing. [citation needed]

  9. Meningitis - Wikipedia

    en.wikipedia.org/wiki/Meningitis

    The subarachnoid space separates the arachnoid and pia mater membranes and is filled with cerebrospinal fluid. The outermost membrane, the dura mater , is a thick durable membrane, which is attached to both the arachnoid membrane and the skull.