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23 Cards in this Set
- Front
- Back
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what is located in the subarachnoid space?
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CSF circulates
major arteries and veins supplying the brain |
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what is a cistern?
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an area created where arachnoid stretches over sulci
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what are potential spaces in the meninges?
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subdural space - between dura and arachnoid
epidural space - between dura and skull |
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where does bleeding occur if bridging veins are torn?
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into subdural space
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what artery and nerves supply meninges?
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middle meningeal artery
sensation - trigeminal nerve |
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what is a dural sinus?
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where 2 layers of dura are separated
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what is the function of dural sinuses?
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receive venous drainage from brain
drain into jugular vein |
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what do emissary and diploic veins drain?
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emissary - scalp to dural sinuses
diploic - skull to dural sinuses |
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what happens if dural sinus is blocked by emolus or tumor?
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usually asymptomatic b/c of many anastomoses
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where is the choroid plexus located?
what makes up the choroid plexus? |
located within ventricles
comprised of pia mater, coroid epithelial cells, capillary bed |
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what is the general flow of CSF?
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lateral v -> interventricular foramen of Monro -> 3rd v. -> cerebral aqueduct -> 4th v. -> (spinal canal or) foramen of Magendie, foramina of Luschka -> subarachnoid space -> reabsorbed to veins via arachnoid granulations
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what are functions of CSF?
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protection, buoyancy, transport of metabolites, drugs, nutrients, hormones
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what is communicating hydrocephalus?
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overproduction or impaired resorption of CSF
obstruction in subarachnoid space |
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what is non-communicating hydrocephalus?
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blockage of flow by occlusion of any connections
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what do vertebral arteries supply?
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brainstem and cerebellum
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what supplies the hemispheres?
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anterior, middle, posterior cerebral arteries
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what do superficial veins drain into?
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superior sagittal sinus and cavernous sinus
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what do deep veins drain into?
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great vein of galen
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what is the location and cause of EPIDURAL hemorrhage?
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location - between skull and dura (epidural space) or between dural layers
cause - middle meningeal artery, temporal bone fx |
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what is the location and cause of SUBDURAL hemorrhage?
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location - potential space b/w dura and arachnoid
cause - torn bridging veins |
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what is the location and cause of SUBARACHNOID hemorrhage?
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location - CSF compartment b/w arachnoid and pia
cause - major arteries and veins, aneurism or trauma |
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what is the location and cause of Parenchymal hemorrhage?
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location - within nervous tissue
cause - penetrating arteries and veins |
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what is the location and cause of intraventricular hemorrhage?
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location - within ventricles
cause - capillaries in choroid plexus and vessels in surroundsing nervous tissue |
