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ANATOMY 254 > lecture 7: circualtion brain > Flashcards

lecture 7: circualtion brain Flashcards

1
Q

what are the 2 main arteries we talk about

A

internal carotid

vertebral

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2
Q

where is the middle meningeal located and what does it supply

A

near the temple

supples the superficial dira matter

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3
Q

what does the common cartoid split into

A

internal cartoid

external carotid

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4
Q

what is the pathway for the interal cartoid

A

through tthe carotid canal, the petrous portion and tthe foreman lacerum

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5
Q

where does the vertebral artery pass

A

through the transvere foramen of the first 6 cervical vertabra

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6
Q

the interal carotid is a division from the what

A

fivision from the common carotid artery

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7
Q

where does the internal carotid enter the skull

A

via the carotid canal

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8
Q

the internal carotid artery passes anteriorly and medially thorugh what

A

the cavernous sinus of the sphenoid body

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9
Q

what are the terminal brances of the int cartoid arttery

A

anterior cerebrlal

middle cerrebral

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10
Q

what are the two anterior ceberals connected by

A

anterior communicating artery

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11
Q

where do the vertrbral arteries perforate

A

throuh the dura and arachnpid to pass through the foramen magnum

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12
Q

the vertebral arteries end up in what space

A

subarachnod space

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13
Q

where to the 2 vertebral arterios unite and what do they form

A

unite anterior to pons to form basilar

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14
Q

what do the vertebral arteries unite to form

A

basilar

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15
Q

what is it called when the vertebral artery and basically artery meet

A

the vertebrobasilar arterior system

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16
Q

what is the vertebrobasilar arterior system also known as

A

posterior circulation of the brain

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17
Q

what complex does the posterior circualtion of the brain

A

vertebrobasilar

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18
Q

where does the basilar artery lie

A

lie close to the base of the skull

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19
Q

what does the basilar artery divide into

A

the 2 posterior ceberal arteries

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20
Q

where do the psoterior cerebral arteies join and how

A

at the internal carotid via the posterior commnicating arteries

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21
Q

know the circule of willis

A

l

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22
Q

what are the 3 cerebral arteries

A

anterior
posterior
middle

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23
Q

what does the atnerior cerebral artery supple

A

supplies most of the medial and superior surfaces of the brain and frontal pole

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24
Q

in what fissure do the anterior cerbral arteireis pass

A

pass on top of corpus callosum

in long fissue

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25
what do the middle cerebral arteries supple
the lateral surface of the brain and temporal pole
26
what fissure do tthe middle cerebral pass through
towards lasteral fissure on top of insula
27
what do the posterior cerebrals supply
supply the intefeior surface of the brain aand occitial pole
28
what fissure does the posterior cerebral artery pass near
the transver fissuer
29
what creates an important anastomosis at the base of the brain
circle of willis
30
what does the circle of willis provife
an important anastomosis | offers different paths
31
what arteries form tthe circle of willis
``` posterior cerebral posterior communicating anterior cerebral anterior communicating internal carotid ```
32
true or false; the middle cerebral artery forms part of the circle of willis
no it does not
33
what structuress lie near the circle of willis
the sella turcica (pituitary) cavernus sinus optic neve and chiasm
34
veins drianing the brain are tribuutairs of what
the large venous sinuese
35
where are venous sinuses located
in the dura matter
36
what is different between venous sinuses and veins
venous sinuese are a foxied dinamater (they have no tunica media (no msucle))
37
what is the main vein receiving blood from the venous sinuses
internal juglar vein
38
what are some branches that offer collateral circulation if the jugular is occluded
angular vein, pteyrgoid plexus and suboccipital veins
39
what are the dural venous sinuses
they are endothelium lined spcaes between the periosteal and meningeal layers of the dura
40
the venous sinuses lie bwteen what
between the periosteal and meningeal layers of the dura
41
large viens from the surface of the brain emtpty into what
dural venous sinuses
42
where does the superior sag sinus lie
lies in the superior border of the falx cerebri
43
where does the superior sagtial sinus orginiate and end
origitnate at the crista galli and ends near the internal occipital protuberance
44
what is the confluence of sinues
sup sagital sinus straigt sinus occipital sinus tranverse sinus
45
the superior sagital ends at what junction
conflucence of sinuses
46
the inferior sagital is larger than the superior sagital
false, it is much smaller
47
where does the inferior sagital run
run in the inferrior border of the falx ceberei and terminates in the strigaht sinus
48
where does the inferior sagtinus terminate
the straight sinus
49
what is the straight sinus fromed by the joining o
the inferior sag and the great cerebral vein
50
where does the straight sinus run
infero=posteriorly along the line of attachment of the falx cerebri and tentorium cerebelli
51
true or false: the straight sinus will join the confluence of sinuese
true
52
what determinest he junction between inf sagitall and straight sinus
great ceberal vein
53
the straight sinus is on top of the....
tentorium cerebelli
54
how does the transverse sinus leave the confluece of sinuses
latarelly along the occipital bones and posteroinferior angles of the parital bones
55
what the the trainsverse sinus become as they approach the petrous portion of the temporal bones
sigmoid
56
what transvere sinus is larger and why
the right is larger because the superior sag usually drains to the right
57
the sigmoid sinus follows what shaped course
s shaped course
58
the sigmoid sinus follows an s shaped crouse in the ...
posteiror cranial fossa
59
the signmoid sinus forms deep grooves in what
in the temporal and occpital bones
60
the sigmoid continues INF/SUP to the jugalr formate to become the blan k
inferior to become the internal jugalar vein
61
where does the occipital sinue lie
in the attached border of the falx cerbelli ending superiorly in the confluences of sinue
62
true or false: the occipital sinus ends inferior in the confluecne of sinuses
false, superior
63
what does the occipital sinus communicate with
with the internal vertebral venous plexus
64
where is the cavernous sinus located (fossa)
in the middle cranial fossa
65
the cavernous sinue is located on the middle cranial fossia situated bilarterially where
on each side of the sell turcisa
66
what does each compartent next to the sella turcica contain
the carvenous sinuese
67
where does the cavernous sinue extend from
from the sup orbital fisse anteriorly to the apex of the petrous portion of the temporal bone posteriorly
68
the cavernous sinue receives blood from what
sup ophthamic vein inf opjthalamic vein middle cerebral vein sphenopartietal sinus
69
where does the cavernous sinus drain
drain to the supior and inferior petrosal sinus (postero inferiorly) and to the pterygoid plexus
70
what are the contents of the cavernous sinus
internal carotid arteru carotid plexis of sympathic nerves abducens nerve
71
what are ensheated in the lateral wall of the cavernous sinus
occulomotor (III) trochealr (IV) trigeminal (CV1 and cV2)
72
where do the superior petrosal sinus run
run from the posterior ends of the veins of the cavernous sinus to the transverse sinus to then curve to form the sigmoid sinus
73
where does the sup. petrosal sinus lie
in the anterolateral portion of the tentorium cerebelli
74
where does the superior petrosal sinus attach
attaches to the petrous portion of the temporal bone (on top of petrous)
75
where does the inferior petrosal sinue begin
beins at the posterior ends of the veins of the cavernous sinus inferiorly
76
where does the innferior petrosnal sinus run
between the [etrous portion of the temporal bones and the basilar portion of the occipital bone
77
what does the inferior petrosla sinus drain
drains the lateral cavernous sinus directly into the orgin of the IJV
78
what dose the basilar plexus connect
connects inferior petrosal sinus to the internal vertebral venous network
79
what do the emissary veins connect
connect dural venous sinuses with the veins outside the cranial
80
the dural venous sinuses contains what
arachnoid granulation (collection of the arachnoid villi)
81
what is the arachnoid granulation
collection of arachnoid villi prolongation of arachnoid that protrude thorugh the meningeal later of the dura into the dural venous sinuses
82
what will the arachnoid granulations affect
affect the transfer of CSD to the venous system
83
where are arachnoid granulations suually found
usually found in areas of the sup sag and transverse sinue
84
how are the arachnoid granualtations adapted
they are srtcutually adapted to transport CSF from the subsrachnoid space to the venous system
85
know the midterm chart
.

ANATOMY 254 (17 decks)

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