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A-CNS Anatomy > cranial cavity 2 > Flashcards

cranial cavity 2 Flashcards

1
Q

بسم الله الرحمن الرحيم وبه نستعين
_______________________
What are emissary veins mention examples

A

Vavless veins connetcing dural venous sinuses with extracranial veins
equalizing pressure intracranial nad may cause infection spread :
1-SSS: to
Nasal veins via foraen cecum
Scalp vens via parital formaen
2-Cavernous sinus :
To SOV
To Pterygoi venous pleux via foramen lacerum ovale shpenoidal
to internal jegular vein via juglar canal
3-Sigmois sinus to
Occipital veins via matsoid foramed
suboccipital veins via condylar canal
Internal Jugular vein via? Hypoglossal canal

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2
Q

Emissary veins connecting SSS TO ?

A

1-nASAL veins via foramen cecum
2-scalp veins via partial foramen

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3
Q

Emissary veins conncecting CS to?

A

1-SOV
2-Pterygoid venous pleyx via foramen lacerum ovale shpenoidal
3-internal juglar veins via juglar canal

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4
Q

Emmisary veins connecting Sigmoid sinus to ?

A

MCH
Occipital veins via Mastoid Foramne
SubOccipital veins Via conduylar canal
Connections to internal juglar veins via? hypoglossal canal

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5
Q

Diploic veins describe

A

Thin walled Valveless veins in the diploe of the skull may spread infection to dural sinuses
________________________
Frontal group to Supraorbital vein
Occipital group to Occipital vein
Anterior Temporal to SphenoPariteal
post temproal to transverse sinus

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6
Q

Describe Trigemnial ganglion

A

It is ganglion of Fifth CN
Crescntric or Semilunar
in Trigeminal impression in pertrous tempral bone
and has it own area on dura Cavum Tirgimnale
__________________________

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7
Q

types of cells of Trigemnial gagnglion ?

A

pseudouniplar with central process to pons
and peripheral process forming the famous 3 branches of Trigeminal :
Opthalmic
Maxillary
Mandibular

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8
Q

Olfactory nerve cross ?

A

Cilibriform palate

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9
Q

Optic canal what passes through?

A

Optic nerve

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10
Q

Superior orbital fissure passed by?

A

O2TA
occlumotor
torochlear
abucents
+opthalmic of trigeminal

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11
Q

Maxillay cross?

A

Foramen Rotandum

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12
Q

Mandublar cross?

A

fORamne OVale

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13
Q

7,8CN cross?>

A

Intrnal acoustic meatus

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14
Q

9-10-11 cross —–with——

A

the juglar canal with internal juglar vein
+Inferior petrosal sinus

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15
Q

12th CN cross? /

A

Hypoglossal canal
or Antreior condylar canal

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16
Q

Mention petrosal nerves

A

Greater petrosal nerve from CN7
Carrying taste + Parasympathatic
Lesser petrosal nerve From CN9
Carrying Parasympatahtic
Deep petrosal Nerves :
Sympathatic from pleux around ICA

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17
Q

DESCRIBE Middle meningeal artery

A

oRginate from first part of maxillary of ECA
then pass upwards between auricltemporal nerve root till foramen spinosum to enter Middle Cranial Fossa then between 2 dural layers grooving sequamous temporal groove then dividnig to frontal + parietal
supplying: Dura
Predominantly? Periosteum of skull

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18
Q

pterion center is ?

A

joining of frontal + temproal + pariteal + ggRATER wing of sphenoid

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19
Q

clininal imp of pterion ?

A

Thninnest part of skull trauma causing Fracture and MMA injury

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20
Q

Extradural and subdural hemorrhage explain

A

Extradural : Arterial origin fom MMA
Subdural : Venous Origin
may show RBCs in CSF
Both hemohhrages casues cerebral compression

21
Q

When CCA divedied and to what is divided ?

A

At superior edge of thyroid cartilage
intervertebral Between C3-C4 in
to ICA AND ECA

22
Q

Internal carotid artery
Begning coures ending describe

A

Begins as one of two terminal branches of CCA at upper edge of Thyroid Cartilage at intervertebral disc Between C3-C4
__________________
COurse in 4 regions so has 4 parts
_________________
ending: ant and middle cereberal arteries
division occursbelow anterior perofrated substance

23
Q

Carotid sheath contains?

A

Cervical ICA
IJV
Vagus

24
Q

Describe Courese of ICA

A

C3P
Cervical: ascending in carotid sheath
Petrous : In carotid canal till foramen lacerum then to cavernous sinus surrouneded by? Carotid Sympathatic pleux
Cavernous in cavenous sinus till its anterior part in the medial wall (inferolateral to it is CN6_
Cerebral : till anterior perforated substance dividing into ant and middle cerebral arteries

25
Q

Mention braches of the ICA branches

A

Cervical : NO
__________
Petrous : Coartico -tympanic branches to middle and inner ear
ptyreoid branch to pterygoid canal
CP
_______________
Cavernous to : TMH
Trigemnial ganglion
Meningeal
Hypophseal
_________________
Cerebral :
Opthalmic giving central Retinal artery end one
Anterior cerebral
middle cerebral
PosteriorCommunicating
Ant Choroidal for CSF
PNT OAM

26
Q

SYSTEMS Suplplying brain ?

A

Carotid system: ant + middle cerebral
Vertebro Basilar system
posterior cerebral

forming circle of willis

27
Q

Dura is drained by….&…..

A

Meningeal veins drain into dural sinuses
Diploic veins

28
Q

Basilar plexus of veins:

A

connect 2 inf petrosal sinus

29
Q

SSS begins at…..&end at….to continue as….

A

Crista galli
Internal occipital protuberance
Right transverse sinus

30
Q

Superior cerebral.veins drain into

A

SSS

31
Q

Pulsations of ICA and ….. controls flow outside CS ?

A

Gravity
Position of head

32
Q

post to CS?

A

Post: apex of petrous temporal bone & crus cerebri of midbrain

33
Q

Describe results of fracture of anterior cranial fossa

A

Bleeding and CSF rhinorrhea
hemorrhage to orbital cavity below conjunctiva causing Black Eye

34
Q

Mention structures passing in foramen ovale

A

M2ALE
Mandiublar nerve
motor of Trigeminal
Accessory memningeal art
lesser petrosal Nerve
Emissary veins

35
Q

Mention structures passing in foramen spinosum

A

Middle meningeal artery
Meningeal branch of Mandibular
Nevus spinosus

36
Q

the middle Cranial fossa is the weakest part
why ?

A

Several Foramina
Sphenoidal air sinus
Middle Ear

37
Q

Middle cranial fossa fracutre results in ?

A

Bleeding and discharge of CSF from ear
Affecting CN 7,8

38
Q

What is the largest & deepest cranial fossa

A

Posterior

39
Q

Mention structures passing jugular foramen

A

IJV posterolateral
Inferior petrosal sinus antermedial
CN 9,10,11

40
Q

Results of PCF fracture?

A

Bleeding into pharynx
Blood collects in nape of neck and posterior Triangle of Neck

41
Q

Uniltaeral pulsating exophthalmos is due to ?

A

Carotid -Cavernous Fistula

42
Q

الحمدلله رب العالمين

A
43
Q

The strucutres in the lateral wall are separeted from what in the center by ?

A

Endothelial lining of the sinus

44
Q

Tribuitaris of Caveronus sinus

A

From Orbit :
SOV+IOV
Centeral vein for retina
_________________
From brain
suprfical middle cerebral
Infero

44
Q

Tribuitaris of Caveronus sinus

A

From Orbit :
SOV+IOV
Centeral vein for retina
_________________
From brain
suprfical middle cerebral
Inferor cerebral veins from tempral lobe
________________
from meninges:
shpenoparital sinus
Frontal Trunk of Middle Meningeal Vein

45
Q

How sigmoid sinus is formed?

A

Transvers with superior petrosal uniting

46
Q

Tear of middle meingeal artery casues?

A

Contralateral Hemiplegia

47
Q

Accessory meningeal artery

A

First part of maxillary artery
entering foramen ovale Supplying skull + dura

48
Q

i

A

A-CNS Anatomy (27 decks)

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