Meninges Flashcards
A cut through what layer in the scalp would result in a gaping wound?
Aponerosis
What layer of scalp does infection spread through?
Loose connective
What are the two layers of the Dura?
- Periosteal
- fused to bone
- Meningeal
What layer of Dura forms sinuses?
meningeal
Where does the middle meningeal artery sit?
- In between two layers of the dura
What layer of dura continues into the spinal cord?
meningeal
What part of the arachnoid matter gives structure to subarachnoid space and make it a real space?
Arachnoid trabeculae
Whar part of arachnoid transverses the meningeal dura into dural venous sinuses?
- continues as arachnoid into venous system and allows for drainage into venous from CSF
- Arachnoid granulations
What layer of the meninges is adherent to the brain and highly vascularized?
- you cant really pick it out
Pia
What dural partition seperates the right and left cerebral hemispheres?
- largest infolding
- in the longitudinal cerebral fissure
Falx Cerebri
What dural partition seperates cerebrum from cerebellum?
- 2nd largest
- falx cerebri attaches to this and help to hold it up
Tentorium Cerebelli
What dural partition seperates right and left cerebellum?
Falx cerebelli
What dural partition is an opening for infundibulum?
- makes house for pituitary to sit on
Diaphragma sellae
What do the dural venous sinuses drain?
- Dipolic veins
- emissary veins
- CSF
- all of these are drained into internal jugular vein via the venous sinuses
What dural venous sinus drains into the internal jugular vein?
Sigmoid