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Terms in this set (33)
The meninges develop from what embryonic structure?
the neural crest and mesoderm
At what stage of fetal development do meninges have the adult pattern?
What is the pachymeninx?
What are the leptomeninges?
arachnoid and pia mater
Dura mater is divided into what three layers, and between which two is there a more distinct boundary?
periosteal, meningeal, border cell, the last two
The blank layer of dura mater lacks dense connective tissue that the other two have?
Name the four dural septa?
falx cerebri, tentorium cerebelli, falx cerebelli, diaphragma sella
What forms the roof of the hypophyseal fossa encircling the infundibulum?
Name the 3 main dural compartments of the brain?
2 lateral supratentorial, infratentorial
Venous structures formed primarily by the meningeal and periosteal dura at the edges of dural septa?
The tentorium is innervated by what nerve and what nerve does that nerve branch from?
tentatorial nerve, opthalmic nerve
The anterior and middle cranial fossae are innervated by what nerve?
branches of the trigeminal nerve
The dura of the posterior fossa receives innervation from what nerves?
C2 and C3 and C1 when present
Because the dura above the tentorium is innervated by blank nerve, pain will be referred to the blank?
The blank are specializations of arachnoid mater that allow CSF to drain into the venous system?
Collections of arachnoid villi are called what?
Arachnoid granulations may calcify in older people and become what?
Is the epipial or the intima pia layer closer to the glial limitans?
intima pia layer
Resistance to dura mater stretch and associated neurological signs (Kernig, Brudzinski) may be an indication of what disease?
Where is the dura mater anchored to the vertebral column?
filum terminale externum
The lumbar cistern usually starts at what level?
Meninginomas are most likely to arise from clusters of blank cells?
What is the most common fossa to find meninginomas?
What meninges are most effected by meningitis?
pia and arachnoid
What is the developmental defect associated with the formation of the meninges often associated with spinal bifida (aperta) usually in the lumbar area
Congenital Dermal Sinus
In ____, the ectoderm fails to completely dissociate from the neuroectoderm leaving an epithelium lined channel to the surface of the skin, often resulting in recurrent meningitis
Congenital Dermal Sinus
The vascular supply for the dura in the cranium originates from several branches of the
internal carotid artery
The vascular supply of the dura in the spinal cord originates from
multiples sources located close to the vertebral column
Fracture of the cranial dural arteries can result in an expanding space occupying...
A subdural hematoma is located
between the meningeal dura and the arachnoid mater
The infratentorial dura is innervated by ___ nerves thus irritation there will be referred to the ____
Cervical nerves, back of the head
What is the glial limitans and what neighbors it superiorly
It is the glial basement membrane directly inferior to the pia intima (the lower of the two pial layers, the superior being the epipial layer)
The extracellular space associated with the pial layer as it enters the brain or spinal cord substance allowing for better exchange of CSF fluid is the
Virchow-Robin Space, also allows for leukemic cells to enter into brain perenchyma
THIS SET IS OFTEN IN FOLDERS WITH...
Synaptic Transmission plus bits of Synaptic Integr…
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