Skull and Cranial Vault Flashcards Preview

Neuro Exam 1 > Skull and Cranial Vault > Flashcards

Flashcards in Skull and Cranial Vault Deck (28):
1

pia mater

on brain not dissectable
areolar CT

2

arachnoid mater

denes CT layer - more elastic and collagen fiber

forms subarachnoid space
-contains CSF

covers brain - not into sulci
except longitudinal fissure

3

cisterns

area of accumulated CSF

4

choroid plexus

forms CSF

5

arachnoid granulations

absorbs CSF in superior sagittal sinus

6

dura mater

dense fibrous CT - continuous with spinal dura at foramen magnum

7

layers of dura mater

periosteal - periosteum of cranial vault adherent to meningeal dura

meningeal layer - duplications of dura prolonged between major portions of brain
-dural reflections

dura surrounds cranial nerves as well

8

falx cerebri

extension of dura between cerebal hemispheres
attached anteriorly to crista galli

becomes continuous with tentorium cerebelli

contains superior sagittal sinus and inferior sagittal sinus

9

tentorium cerebelli

tent over posterior cranial fossa
separates cerebellum from posterior portion of cerebral hemispheres

attached along occipital bone at grooves for transverse sinus
and to petrous ridge

encloses superior petrosal sinus

10

tentoral notch

free anterior concave margion of tentorium which wraps around midbain

11

rapid deceleration

tentorial notch can transcect midbrain

12

straight sinus

sight of fusion of falx cerebri and tentorium cerebelli

13

falx cerebelli

dura between cerebellar hemispheres
from tentorium above to occipital crest below

contains occipital sinus

14

diaphragma sellae

specialized dura roof over hypophyseal fossa

15

dural venous sinuses

endothelial lined spaces between opposed layers of dura

collect blood and CSF
-from brain, meninges, diploe, vertebral column, face, orbit, nasal cavity, parietal, mastoid, occipital areas

16

emissary veins

communicate between dural sinuses and veins of scalp

no valves

17

flow of dural venous sinuses

all to internal jugular vein

18

superior sagital sinus

located in superior margin of falxi cerebri

begins at foramen cecum
ends at confluens of sinuses

receives blood and CSF

19

arachnoid granulations

reabsorption of CSF in superior sagittal sinus

protrude into sinus at venous lacunae

20

inferior sagittal sinus

inferior concave margin of falx cerebri
receive cerebral and meningeal veins

end at straight sinus

21

straight sinus

junction of falx cerebri and tentorium cerebelli

receives inferior sagittal sinus and great cerebral vein

22

great cerebral vein

rains core of cerebrum

23

transverse sinus

bilateral continuations of superior sagittal sinus and straight sinus
perimeter of tenrotium at point just short of petrous portion of temporal bone

24

sigmoid sinus

S-shaped
internal surface of temporal bone posterior to petrous ridge

confluent with jugular bulb at jugular foramen

receives superior petrosal sinus and inferior petrosal sinus

25

occipital sinus

in falx cerebelli
surrounds foramen magnum to communicate with basilar sinus

opens superiorly at confluens

26

confluens of sinuses

only when ALL meet

point of juncture of superior sagittal, straight, transverse, and occipital sinuses

27

sphenoparietal sinus

bilaterally between opposed layes of dura along posteiror edge of lesser wing of sphenoid

drains dura to cavernous sinus

28

end at pg 103

cavernous sinus