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[OS 202] A > Trans - Meninges and CSF Pathways > Flashcards

Trans - Meninges and CSF Pathways Flashcards

1
Q

meninges - define

A

connective tissue wrappings of CNS

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2
Q

pachymeninges - components

A

dura and arachnoid

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3
Q

Leptomeninges - components

A

pia and arachnoid

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4
Q

2 layers of dura mater

A
  1. outer periosteal

2. inner meningeal

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5
Q

which layer of the dura has blood vessels and nerves?

A

outer periosteal

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6
Q

2 potential spaces within dura

A
  1. epidural space

2. subdural space

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7
Q

epidural hematoma will follow the contour of what structure

A

skull

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8
Q

subdural hematoma will follow the contour of what structure

A

brain

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9
Q

[T/F] the subarachnoid space is an actual space

A

T

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10
Q

what is contained in the subarachnoid space

A

CSF and blood vessels

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11
Q

falx cerebri lies in what structure

A

median sagittal fissure

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12
Q

falx cerebri - anterior attachment

A

crista galli

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13
Q

falx cerebri - posterior attachment

A

tentorium cerebelli

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14
Q

what separates the hemispheres of the cerebellum

A

falx cerebelli

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15
Q

what separates the cerebellum from the cerebrum

A

tentorium cerebelli

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16
Q

dural projection lying over sella turcia

A

diaphragma sellae

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17
Q

what structure projects through the diaphragma sellae

A

infundibulum

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18
Q

another name for confluence of sinuses

A

torcular Herophili

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19
Q

what sinuses converge in confluence of sinuses

A
  1. superior sagittal sinus
  2. left transverse sinus
  3. right transverse sinus
  4. straight sinus
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20
Q

sigmoid sinus drains into what structure

A

jugular bulb

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21
Q

biggest blood vessel in dura

A

middle meningeal artery

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22
Q

middle meningeal artery is a branch of:

A

internal maxillary artery (os204 yehey)

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23
Q

anterior meningeal arteries are branches of:

A

opthalmic artery

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24
Q

posterior meningeal arteries are branches of

A

occipital or vertebral arteries

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25
Q

innervation of dura in anterior and middle cranial fossa

A

trigeminal nerve

26
Q

innervation of dura in posterior cranial fossa

A

C2/C3, vagus

27
Q

spinal dura mater forms a tube from where to where

A

foramen magnum to S2

28
Q

spinal dura mater forms which structure at the end of the spinal cord

A

coccygeal ligament

29
Q

epidural space of the spinal dura mater is largest above which vertebra

A

L2

30
Q

[T/F] spinal epidural space is a potential space

A

F

31
Q

difference of spinal and cranial epidural spaces

A

cranial epidural spaces is between periosteum and cranium

spinal epidural space is between dura and periosteum

32
Q

what is the biggest cisterna

A

cisterna magna / cerebellomedullary cisterna

33
Q

where is the interpeduncular cisterna located

A

in the interpeduncular fossa

34
Q

what subarachnoid cisterna is associated with the superior and inferior colliculi

A

quadrigeminal cisterna

35
Q

what subarachnoid cisterna is associated with the thalamus

A

ambient cisterna

36
Q

function of arachnoid villi/granulations

A

absorb CSF back into venous system

37
Q

cells associated with arachnoid villi / granulations

A

leptomeningeal cells

38
Q

Virchow-Robin perivascular space - define

A

enclosed space associated with pia mater, following vessels of the brain up to the capillary level

39
Q

cuff around brain blood vessels

A

intima pia

40
Q

filum terminale anchors what structures

A

anchors conus medullaris (caudal end of spinal cord) to caudal end of spinal dural sheath

41
Q

projections of pia mater in spinal cord which go through the arachnoid to interface with the dura

A

denticulate ligaments

42
Q

ventricles are lined by what cells

A

ependymal cells

43
Q

choroid plexus - function

A

filter plasma to create CSF

44
Q

rate of creation of CSF

A

500 ml/day

45
Q

normal amount of CSF in ventricular system and subarachnoid space

A

100-160ml

46
Q

blood brain barrier - function

A

protects brain from infection

47
Q

type of junction in blood brain barrier

A

tight junction

48
Q

what substances does the blood brain barrier let pass?

A

nutrients, O2, CO2

49
Q

the blood brain barrier is not a barrier against what substances

A
  1. uncharged molecules
  2. lipid soluble molecules
  3. nicotine and alcohol
  4. some anaesthetics
50
Q

lateral ventricles follow contour of what structure

A

caudate nucleus

51
Q

parts of lateral ventricle

A
  1. frontal horn
  2. temporal horn
  3. occipital horn
  4. atrium
52
Q

another name for atrium of lateral ventricle

A

trigone

53
Q

what structure separates the left and right sides of the lateral ventricle? in what specific part of the ventricle is this found?

A

septum pellucidum in frontal horn

54
Q

how does the lateral ventricle communicate with the 3rd ventricle

A

foramen of Monro

55
Q

how does the 3rd ventricle communicate with the 4th ventricle

A

cerebral aqueduct / aqueduct of Sylvius

56
Q

structures immediately anterior to the 4th ventricle

A

pons and medulla

57
Q

structures immediately posterior to the 4th ventricle

A

cerebellum

58
Q

the 4th ventricle floor has pubs for which cranial nerves

A

7, 9

59
Q

how does the 4th ventricle communicate with the subarachnoid space

A
  1. one foramen of Magendie

2. two foramina of Luschka

60
Q

which of the 4th ventricle foramina is more lateral?

A

foramen of Luschka

61
Q

which of the 4th ventricle foramina is more medial

A

foramen of Magendie

[OS 202] A (18 decks)

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