337 meninges
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17 terms
Terms | Definitions |
|---|---|
 what are the layers of meninges, inside to outside? | pia mater, arachnoid, dura |
| what is the name for arachnoid and pia mater together? | leptomeninges |
| what is the name for the meninges around the cerebral hemispheres? | falx cerebri |
| what is the name for the meninges around the cerebellum? | tentorium cerebelli |
| what are the third and lateral ventricle separated by? | interventricular foramen |
| what is the CSF canal in the medulla/spinal cord? | central canal |
| what space comes off the fourth ventricle before the cerebellum? | lateral recess/aperture |
| where is the choroid plexus? | the lateral, third, and fourth ventricle |
| what is the function of the choroid plexus? | 1. produces CSF that: - cushions brain, spinal cord -maintians stable extracellular environment for neurons and glia - removes waste product |
| what is the medullary velum | pia mater and ependymal cells |
| what does choroid epithelium do? | prevents peptides, protiens, other large molecules from blood filtrate into CSF. |
| what are the capillaires like in the choroid plexus? | fenestrated - leaky |
| what makes up the blood-CSF barrier? | the choroid epithelium |
| what is the choroid epithelium? | ependymal cells with tight junctions |
| what is flow of CSF fluid? | 1. lateral ventricles 2. interventricular foramen 3. third ventricle 4. cerebral aqueduct 5. fourth ventricle 6. central canal/lateral recess 7. subarachnoid space 8. arachnoid villi 9. dorsal sagittal sinus |
| where is the falx cerebri located? | longitudinal fissure |
| what happens when cerebral aqueduct narrowed? | hydrocephalus - enlargement of cerebral ventricle |
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