Term
|
Definition
- stabilize shape & position
- attaches to skull
- contains CSF |
|
|
Term
Meningeal Layers
(outter --> inner) |
|
Definition
- dura mater
- arachnoid
- pia mater |
|
|
Term
|
Definition
between arachnoid and pia mater
&
contains CSF
&
cerebral arteries and veins travel here |
|
|
Term
|
Definition
| arachnoid & pia mater lumped together |
|
|
Term
|
Definition
- periosteal dura
- meningeal dura |
|
|
Term
| potential spaces involving dura mater |
|
Definition
|
|
Term
|
Definition
separates 2 cerebral hemispheres
|
|
|
Term
|
Definition
| separates occipital lobe from cerebellum |
|
|
Term
|
Definition
| opening where brainstem passes out |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| channels for venous blood located within dural reflections |
|
|
Term
|
Definition
| where sinuses come together (contains straight sinus) |
|
|
Term
|
Definition
| exits the skull and becomes the internal jugular vein |
|
|
Term
|
Definition
meningeal arteries
middle meningeal arteries (branch of maxillary)
opthalamic arteries
occipital arteries
vertebral arteries |
|
|
Term
|
Definition
|
|
Term
|
Definition
| dura and proximal portion of vessel at the base of the brain |
|
|
Term
| what innervates the majority of dura? |
|
Definition
| trigeminal nerve fibers & its 3 branches |
|
|
Term
| what innervates posterior cranial fossa dura |
|
Definition
branches of vagus nerve,
C2 & C3 |
|
|
Term
|
Definition
- avascular membrane
- attached to dura
- arachnoid trabeculae attaches to pia
|
|
|
Term
|
Definition
- large spaces between arachnoid and pia
|
|
|
Term
|
Definition
aka cerebellomedullary cistern
-largest cistern |
|
|
Term
|
Definition
| invests all external surfaces of CNS |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| spinal cord terminates where? |
|
Definition
|
|
Term
| Overview of Ventricular System |
|
Definition
2 lateral venticles
- foramina monro
3rd ventricle
-cerebral aqueduct
4th ventricle |
|
|
Term
|
Definition
where cauda equina is located
- large arachnoid space containing CSF
|
|
|
Term
|
Definition
-anterior (frontal horn)
- body
- posterior (occipital) horn
-inferior (temporal) horn
*atrium/trigone = where posterior, inferior, and anterior horn come together |
|
|
Term
|
Definition
- in the diencephalon
- dought-nut shape = has interthalamic adhesion
- contains the lamina terminalis = most anterior portion of ventricles |
|
|
Term
|
Definition
-tent shaped: superior medullary velum & inferior medullary velum
rhomboid fossa : foramen of Magendie & Foramina of Luschka
communicates with subarachnoid space |
|
|
Term
| Cerebrospinal Fluid source |
|
Definition
|
|
Term
|
Definition
atrium
roof of 3rd ventricle
caudal half of 4th ventricle
lateral ventricles (except anterior and posterior horns) |
|
|
Term
|
Definition
choroid plexus --> ventricular system --> subarachnoid space --> arachnoid villi
--> dural venous sinuses --> peripheral venous system |
|
|
Term
| return of CSF to venous system |
|
Definition
| arachnoid villi --> arachnoid granulation - pacchionian bodies |
|
|
Term
|
Definition
| keeps micro-organisms out of the brain |
|
|
Term
| CSF volume that warrants concern |
|
Definition
|
|
Term
|
Definition
500 ml/day
turnover rate = 3-4 times daily |
|
|
Term
|
Definition
- maintains external environment for neurons and glia
- removal of potentially harmful metabolites
- mechanical cushion
- buoyancy
- conduction pathway for peptide hormones secreted by hypothalamus |
|
|
Term
|
Definition
| presence of leukocytes or high protein content |
|
|
Term
|
Definition
|
|
Term
| Acute Bacterial Meningitis |
|
Definition
| 3000 - 4000 leukocytes/ml |
|
|
Term
| decrease in glucose in CSF |
|
Definition
acute bacterial infection
or
tumors of meninges |
|
|
Term
|
Definition
Lumbar cistern (L1-S2; CSF & nerve roots)
or cerebellar cistern |
|
|
Term
|
Definition
| excess CSF because of alteration of circulation of CSF |
|
|
Term
| potential causes of hydrocephalus |
|
Definition
-excess production of CSF (papillomas)
- reduced absorption of CSF
- blockage of CSF circulation |
|
|
Term
|
Definition
communicating - both lateral ventricles have communication with sub arachnoid space
noncommunicating - 1 or both lateral ventricles cannot communicate with the subarachnoid space |
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|
