Brain meniges Flashcards
is the brain dura matar vascularized and by what mainly
well vascularized
-middle menigeal artery mainly
what are the layers of the dura mater
- External periosteal layer- adheres to the skull
2. Int menigeal layer- continous w spinal dura mater
what is the epidural space
virtual space bw duramater and skull
what does the venous drainage of the dura mater drain into
pterygoiod venous plexus
What happens when there is a tumor formation in dural sleeve in optic canal
will put pressure on CN2 and cause visual field defects
what is the cerebellar tentorium
ext of dura mater that seperates he cerebellum from the inf portion of the occipital lobes
What is the cerebral falx and whats its attachments
located bw r + l cerebral hemisheres
-attaches on cristea gali, along border of sup saggital sinus, int occipital protuberance
what is the cerebellar falx
bw r + l cerebellar hemisphere
What is the sellar diaphram
Small dural fold thaat roofs the pituitary fossa that contains a circular hole allowing for passage of the pituitary stalk
What inn the tentorial cerebelle
Meningeal branches of opthalmic div(CNV1)
What inn the post part of falx cerebra
Meningeal branches of opthalmic div (CnV1)
What inn the ant part of falc cerebra
Ant meningeal branch of opthalmic div (V1)
what inn the ant cranial fossa
All trigeminal branches
What inn the mid cranial fossa
meningeal branch of maxillary div (CN5V2)
Meningeal branch of mandibular div (CN5V3)
What inn the post cranial fossa
Meningeal branches of C2 + C3
What does a brain freeze refer pain to deep in skull
becuase sensation of inside oral cavity is supplied by branches of the trigeminal n
characteristics of the arachnoid matter
loose thin connective layer bw dura and pia mater
avascular
characteristics of the pia mater
Inner most layer that intametly covers brain
all cerebral arteries and their branches travel thru the pia mater
what is the subarachnoid space and what does it contain
bw arachnoid and pia mater
-Contains CSF and cerebral arteries
What is an epidural hematoma
Traumatic injury that leads to rupture of middle menengeal artery which accumulates blood in epidural space
what is a subdural hematoma
traumatic injury that causes rupture to the cerebral veins
blood will accumulate in subdural space
(bw dura and arachnoid)
What happens in an uncal herniation
when there is a space occupying lesion that develops above tentorum cerebelle pressue is applied to uncus which pits pressure on midbrain affecting motor nucleus of occulomotor n
