Brain & Meninges (Part 2)

Question 1

what layers the dural venous sinus

Answer 1

endothelium

Question 2

where is the dural venous sinus located

Answer 2

between the periosteal and meningeal dural folds

Question 3

what does the dural vebous sinus drain

Answer 3

all crainal contents via the internal jugular

Question 4

where does the dvs collect venous blood from

Answer 4

cerebral vv.
cerebellar vv.
vv. draining the brain stem
diploic vv.
emissary vv

Question 5

dvs unpaired vs paired

Answer 5

unpaired:

paired:

Question 6

dvs unpaired vs paired

Answer 6

unpaired:
1. S sagittal
2. I sagittal
3. straight
4. occipital
5. A inter

paired:

1. transverse
2. sigmoid

Question 7

where does the SSS begin

Answer 7

crista galli of the ethmoid bone

Question 8

where does the SSS terminate

Answer 8

confluence of sinuses

Question 9

where does SSS lie

Answer 9

convex attached border of the falx cerebru

Question 10

what does the SSS recieve

Answer 10

superior cerebral vv.

Question 11

what is the drainage site of CSF via arachnoid granulations

Answer 11

SSS

Question 12

what is the smaller SS

Answer 12

inferior SS is much smaller than SSS

Question 13

where does the ISS run

Answer 13

runs in the inferior concave free border of the falx cerebri

Question 14

where does the ISS end

Answer 14

at the straight sinus

Question 15

where does the occipital sinus lies

Answer 15

in the attached border of the falx cerebelli

Question 16

where does the OS end

Answer 16

confleucne of sinuses

Question 17

confluence sinuses

Answer 17

dialted space at internal occipital protriberance

Question 18

confluence sinuses tributaries

Answer 18

superior sagittal
straight
occipital

Question 19

transverese sinus: paired or unpaired?

Answer 19

paired

Question 20

transverse sinus passes were

Answer 20

laterally from confluence of sinuses

Question 21

transverse sinus forms a groove in whar bone

Answer 21

occipital

Question 22

sigmoid sinus: paried or up

Answer 22

p

Question 23

sigmoid sinus: continuation of what sinus

Answer 23

transverse sinus

Question 24

what does the sigmoid sinus form

Answer 24

deep s shaped groove in temporal and occipital bones

Question 25

sigmoid sinus drains through

Answer 25

internal jugular vein

Question 26

cavernous sinus* is situated where

Answer 26

middle cranial fossa on either side of the body of the sphenoid

Question 27

cavernous sinus*

Answer 27

pool stagnant blood contained by dural folds

Question 28

cavernous sinus* is situated where

Answer 28

middle cranial fossa on either side of the body of the sphenoid
A boundary: S orbital fissure
P boundary: apex of petrous temporal bone

Question 29

cavernous sinus*

Answer 29

pool stagnant blood contained by dural folds

- doesnt drain as well

Question 30

cavernous sinus* connected by

Answer 30

A and P intercavernous sinuses

Question 31

cavernous sinus* recieves blood

Answer 31

tributaries

1. cerebral vv.
2. superior and inferior opthalamic vv. (picture)

• intracraninal

Question 32

cavernous sinus* drains into

Answer 32

1. superior and inferior petrosal sinuses
2. basilar sinus (plexes)
3. sometimes can drain into the pterygoid sinuses via emissary

Question 33

superior petrosal sinus lies were

Answer 33

in antero-lateral margin of tentorium

Question 34

superior petrosal sinus drains into

Answer 34

transverse sinus

Question 35

where does the inferior petrosal sinus run

Answer 35

groove between petrous portion of the temporal bone and basilar part of occipital bone

Question 36

inferior petrosal sinus drains

Answer 36

into junction between sigmoid sinus and internal jugular v.