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maris ga 2 > meninges > Flashcards

meninges Flashcards

1
Q

outward in order of meninges

A

dura mater, arachnoid mater, pia mater

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2
Q

what is adherent ot the arachnoid mater

A

dura mater

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3
Q

usually no subdural space but there is a space between dura mater and arachnoid mater if there is

A

bleeding

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4
Q

subarachnoid space is between what and filled with

A

between arachnoid and pia mater

fileld with cerebrospinal fluid

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5
Q

where find cisterna magna

A

cistern between cerebellum and brainstem

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6
Q

what is csf

A

ultrafiltrate of blood

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7
Q

where csf come from

A

chroid plexus in ventricles

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8
Q

the csf goes to () space and then reenters the blood via the ()

A

subarachnoid space

arachnoid granulations/vili

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9
Q

where find arachnoid granulations

A

project into superior sagittal sinus

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10
Q

which is a very thin, highly vascularized membrane made of loose ct

A

pia mater

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11
Q

what does the pia mater dip into

A

sulci and fissues of brain (carrying blood vessels in it)

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12
Q

where do cerebral veins run on

A

on the pia within the subarachnoid space

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13
Q

what do the cerebral veins form

A

the tela choroidea

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14
Q

what does the tela choroidea becomes when it fuses with ependyma

A

choroid plexu

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15
Q

what are gyrus

A

convoluted elevation of the brain cortical tissue

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16
Q

which meninge layer is a delicate transparent membrane composed of web-like tissue

A

arachnoid mater

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17
Q

the arachnoid goes over the () not in it

A

sulci/fissures

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18
Q

what separates the dura mater and the arachnoid mater

A

subdural space

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19
Q

what separates the arachnoid and pia matter

A

subarachnoid space

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20
Q

what does the subarachnoid space contain

A

csf

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21
Q

what are cisterns

A

dilated portions of subarachnoid space

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22
Q

what are arachnoid villi

A

tufted prolongations of pia-arachnoid which protrude through the meningeal layer of the dura mater

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23
Q

cisterns in spinal cord is found where

A

lumbar cistern where dilation of subarachnoid space so get csf collection for spinal tap

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24
Q

collections of arachnoid vili form

A

arachnoid granulations

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25
Q

where do you find the arachnoid granulations

A

margin of superior sagittal sinus

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26
Q

the spongy tissue of the vilus contain tubules that serve as

A

one-way valves for transfer of csf from subarachnoid space to the venous system

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27
Q

what are the majore site of fluid transfer

A

vili and granulations

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28
Q

what is the outermost and tough covering of cns

A

dura mater

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29
Q

what does the dura mater consist of

A

connective tissue

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30
Q

what is the dura mater describes as

A

two layers membrane

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31
Q

what is the dura mater 2 layers membrane made up of

A 
periosteal layer
meningeal layer (fuse at some parts)
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32
Q

what does the meningeal layer form

A

dural sheaths/epineureiums of the cranial nerves

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33
Q

the dura mater forms four inwardlay projectiong septa or folds called

A

dural septa

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34
Q

what are the dural sinuses

A

venous channels between the meningeal and periosteal layers of dura mater

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35
Q

where is falx cerebri

A

between two cerebral hemispheres

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36
Q

tentorium cerebelli

A

occipital lobe from the cerebellum

37
Q

falx cerebelli

A

between two cerebellar hemispheres

38
Q

diaphragm sellae

A

roof over sella turcica

39
Q

what is dural septa

A

inward extensions of dura matter

40
Q

function of dural septa

A

keeps brain in place, supports ti so prevent movement

41
Q

attachment of falx cerebri

A

anteriorly: christa galli and fromtal crest
posteriorly: iop

42
Q

attachment of tentorium cerbelli

A

anteriorly: crest of petrous portion of temporal bone
posteriorly: groove of transver sinus

43
Q

attachments of falx cerebelli

A

iop to foramen magnum along internal occipital crest

44
Q

what septa has a central opening for the pituitary infundibulum/stalk

A

diaphragm sellae

45
Q

superior sagittal sinus is located along

A

superior convex margin of falx cerebri

46
Q

inferior saggital sinus is where

A

inferior border of falx cerebri

47
Q

straight sinus is where

A

line of attachment of falx cerebri to the tentorium cerebelli

48
Q

what joins the inferior saggital sinus to become the straight

A

great cerebreal vein/ great cerebreal of galen

49
Q

transverse sinus occupies

A

posterior margin of tentorium cerebelli

50
Q

sigmoid sinus grooves the () part of temporal bone

A

mastoid

51
Q

sigmoid sinus begins as continuation of

A

transverse sinus

52
Q

sigmoid sinus is continuous with the

A

bulb of internal jugular vein at jugular foramen

53
Q

occipital sinus communicates with () and ()

A

internal vertebral venous plexus and confluence

54
Q

smallest dural sinus

A

occipital

55
Q

where is confluence of sinueses

A

internal occipital protuberance

56
Q

what make upt he confluence of sinuses

A

superior sagittal, straight, transverse, occipital

57
Q

superior petrosal sinus runs along

A

superior edge of petrous portion of temporal bone

58
Q

inferior petrosal sinus drains the () directly into () vein

A

cavernous sinus , internal jugular

59
Q

what does the inferior petrosal sinus receive

A

cerebellar, labryrinthine veins

60
Q

sphenopareital sinus runs along margin of ()

A

lesser wing of sphenoid bone

61
Q

superior petrosal sinus provides a connecteion between the () and () sinus

A

cavernous and transeverse

62
Q

the inferior petrosal sinus connexts what

A

cavernous sinus and internal jugular vein

63
Q

cavernous sinus lactedon

A

sides of sella turcica nad body of sphenoid bone

64
Q

what passes through the cavernous sinus

A

ICA, abducent nerve

65
Q

what is found on lateral wall of cavernous sinus

A

cranial nerve 3, 4, V1 V2

66
Q

basilar sinus consists of

A

interconnecting venous channels on the clivus

67
Q

basilar sinus connects 2 () and communicates with()

A

2 inferior petrosal sinuses

com: internal vertebral venous plexus

68
Q

if rupture ICA get high pressure and edema behind eye which causes

A

pulsating exopthalamus UNILATERALLY

69
Q

arteries of dura mater 3

A

anterior meningeal artery, middle meningeal artery, posterior meningeal artery

70
Q

anterior meningeal a is branch of

A

anterior ethmoidal a

71
Q

middle mening a branch of

A

maxillary a.

72
Q

what is the main blood source of dura mater

A

middle meningeal a

73
Q

middle mening enters the cranium though ()

A

foramen spinosum

74
Q

posterior meningeal a is branch of

A

ascending pharyngeal, occipital, vertebral a

75
Q

middle meningeal veins exit through

A

foramen ovale and spinosum

76
Q

midd men v exits and joins teh

A

pterygoid plexus of veins

77
Q

the pterygo plexus becomes () vein

A

maxillary vein

78
Q

the maxillary vein joins the () to become the retromandibular v

A

temporal

79
Q

the anterior and posterior meningeal veins empty primarily into

A

dural sinuses of anterior and posterior cranial fossa

80
Q

emissary veins connect the intracranial venous sinuses with () veins

A

extracranial

81
Q

true or false dura mater is sensitive to pain

A

TRUE

82
Q

why lay down after spinal tap

A

brain dural sinuses sag and cause spinal headave

83
Q

sensory supply to dura mater

A

trigeminal nerve , c1,c2, c3

84
Q

sensory supply og anterior cranial fossa of dura

A

v1,2,3

85
Q

supply floor of middle cranial fossa

A

meningeal branches of v2, v3 (follows middle meningeal a)

86
Q

tentorium cerebelli and posterior falx cerebri supplied by

A

tentorial branch of v1

87
Q

anterior part of falx cerebri supplied by

A

anterior meningeal branch of v1

88
Q

the c1-3 of senseorysupply to dura tranves through

A

vagus and hypoglassal nerves

89
Q

c1-3 supplys dura of the ()

A

floor of posterior cranial fossa

maris ga 2 (8 decks)

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