Arachnoid granulations (AGs) yog tufts ntawm arachnoid membrane invaginated rau hauv dural sinuses los ntawm cov kua cerebrospinal (CSF) nkag mus rau hauv lub venous system. Cov kab mob feem ntau yog nyob rau hauv thaj tsam parasagittal raws lub superior sagittal sinus superior sagittal sinus Lub superior sagittal sinus yog ib tug unpaired venous qauv uas originates ntawm qhov chaw ntawm lub frontal thiab ethmoid pob txha, ncaj qha posterior mus rau lub foramen cecum ze rau crista galli. https://www.ncbi.nlm.nih.gov › books › NBK546615
Neuroanatomy, Superior Sagittal Sinus - StatPearls - NCBI Bookshelf
[1], uas qee zaus pom ntawm qhov chaw hla hla.
arachnoid villi thiab granulations nyob qhov twg?
Arachnoid granulations (tseem arachnoid villi, thiab pacchionian granulations lossis lub cev) yog me me ntawm cov arachnoid mater (cov txheej thib ob uas npog lub hlwb) rau hauv daim nyias nyias ntawm dura mater (cov tuab tuab. txheej txheej).
Puas yog arachnoid granulations nyob rau hauv qhov chaw subarachnoid?
Arachnoid granulations lossis villi yog kev loj hlob ntawm arachnoid daim nyias nyias mus rau lub dural sinuses, uas CSF nkag mus rau hauv cov hlab ntsha los ntawm qhov chaw subarachnoid. Arachnoid villi yog microscopic, whereas arachnoid granulations sawv cev villi distended thiab pom ntawm qhov muag liab qab.
Puas muaj arachnoid granulations hauv qaum qaum?
CSF kuj ncig ncig ntawm tus txha caj qaum thiab cov leeg txha caj qaum uas ua haujlwm los ntawm nws (Daim duab 2-3). Raws li cov qauv no tawm ntawm tus txha caj qaum, arachnoid villi thiab arachnoid granulations tsim raws lub dura ntawm lub hauv paus lub tes tsho thiab ua haujlwm rau hauv cov leeg txha caj qaum.
Dab tsi yog arachnoid granulation hauv lub hlwb?
Arachnoid granulations yog cov qauv uas muaj cov kua dej cerebrospinal (CSF) uas txuas mus rau hauv cov venous sinuses los ntawm kev qhib hauv dura mater thiab tso cai rau cov kua dej ntawm CSF los ntawm qhov chaw subarachnoid mus rau hauv cov hlab ntsha.. Feem ntau lawv yog asymptomatic tab sis tuaj yeem ua cov tsos mob thaum loj txaus ua rau mob qhov ntswg.
