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CNS Anatomy > Cerebral White Matter > Flashcards

Cerebral White Matter Flashcards

1
Q

Superior longitudinal bundle connects……while inferior connects……

A

Frontal to occipital and temporal lobe
Temporal & occipital

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2
Q

The bundle which connects Wernicke’s & Broca’s areas

A

Uncinate bundle

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3
Q

Cingulum connects……

A

Cingulate gyrus to the parahippocampal gyrus

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4
Q

Mention fibers passing in ant limb & genu of intenal capsule

A

A, frontopontine & anterior thalamic radiation
G, corticonuclear fibers

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5
Q

Mention fibers passing in posterior limb

A

Corticospinal, frontopontine, corticorubral, superior thalamic radiation (sensory radiation)

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6
Q

Mention contents of sublentiform & retrolentiform parts

A

S, auditory radiation + temporopontine & parietopontine fibers
R, optic radiation + parietopontine & occipitopontine fibers

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7
Q

Describe blood supply of internal capsule

A

Upper 1/2 of ant & post lims supplies by MCA
Lower 1/2 of post limb supplied by posterior communicating & ant choroidal
Genu & lower 1/2 of ant limb ACA
Retrolentiform & sublentiform suuplied by ant choroidal art

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8
Q

Describe relations of corpus callosum

A

Sup: flax cerebri, ACA
Inf: fornix & septum pellucidum

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9
Q

Rostrum of corpus callosum connects …..while genu connects…..

A

Orbital surfaces of two frontal lobes
Medial & lateral surfaces of 2 frontal lobes

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10
Q

Mention areas connected by body

A

Wide areas of cortex in parietal, temporal & occipital lobes

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11
Q

Describe relation of tapetum to lateral ventricle

A

Form roof & lateral wall of post horn of lateral ventricle

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12
Q

Forceps major is formed by….., forceps minor is formed by……

A

Splenium
Genu

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13
Q

Describe connections made by anterior commissure

A

It splits into anterior bundle that connects anterior perforated substance
& posterior bundle that connect temporal gyri

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14
Q

Posterior commissure connects…….

A

Right & left pretectal nuclei, superior colliculi & MLB

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15
Q

Interventricular foramen is bound ant by….& post by……

A

Column of fornix
Ant end of thalamus

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16
Q

Describe bounds of body of lateral ventricle

A

Roof by body of corpus callosum
Floor by body of caudate + stria terminalis & thalamostriate vein + thalamus + body of fornix (from lat to med)
Med by septum pellucidum (ant) & carpus callosum + fornix meet posteriorly

17
Q

Describe bounds of ant horn of lateral ventricle

A

Roof: body of corpus callosum
Floor: rostrum of corpus callosum (med) & head of caudate (lat)
Ant: genu of corpus callosum
Med: septum pellucidum + ant column of fornix

18
Q

Describe bound of posterior horn of lat ven

A

Roof & lat wall: tapetum of corpus callosum, lat is optic radiation then inferior longitudinal bundle
Medial wall contains bulb of posterior horn (fibers of forceps major) & calcar avis (by calcarine sulcus)

19
Q

Describe bounds of inferior horn of lat vent

A

Roof: tail of caudate nucleus (lat) & stria terminalis (med) both end ant in the amygdaloid nucleus
Floor: collateral eminence, hippocampus, fimbria cont with posterior column of fornix (lat to med)

20
Q

The choroid fissure lies between………in body of lat vent, while in inf horn of lat vent……….

A

Body of fornix & upper surface of the thalamus
Stria terminalis & the fimbria

21
Q

Mention arteries of tela choroidea

A

Ant choroidal (of ICA) & posterior choroidal (of post cerebral)

22
Q

Mention bounds of tela choroidea

A

Post: base transverse cerebral fissure below splenium of corpus callosum
Ant: its apex reached interventricular foramen of Monro
Lat: invaginate the choroid fissure pushing its ependymal lining
Inf: invaginates roof of 3rd ventricle

23
Q

Denticulate ligament is formed by…..

A

Pia mater

24
Q

…….is found over cerebellum while….. is found below it

A

Cisterna ambiens
Cisterna magna

25
Q

Cisterna pontis contains….., while interpeduncular cistern contains……

A

Basilar artery
Circle of Willis

26
Q

Total volume of CSF is about………, …..are secreted every day.

A

130 to 150 ml
300 ml

27
Q

Mention functions of CSF

A
  1. Protects brain against trauma & acts as water jacket
  2. Helps to keep volume of fluid inside skull constant
  3. Removal of neuronal metabolites
28
Q

Describe course of vertebral artery

A

Begins as branch of 1st partcof subclavian, 1st part before foramen transversarium, 2nd pard passes through f.t. of upper 6 cervical v. 3rd part in the suboccipital triangle then enters cranial cavity through foramen magnum, 4th part passes on ventral surface of medulla oblongata. Ends at lower border of pons by joining vertebral of other side, basilar artery.

29
Q

Mention branches of vertebral artery in cranial cavity

A

Meningeal, PICA, post & ant spinal, medullary branches

30
Q

Mention branches of basilar artery

A

Pontine, labyrinthine, AICA, superior cerebellar, posterior cerebral

31
Q

Mention arteries forming circle of Willis

A

R&L ACA & anterior communicating artery joining them
R&L ICA
R&L PCA
Posterior communicating art joining ICA+PCA

32
Q

Mention central branches of circulus arteriosus & what they supply

A

Antero-medial group from ACA, caudate & lentiform (ANT) + parts of internal capsule
Antero-lateral group from MCA, caudate & lentiform (POST) + parts of i.c.
The largest is Charcot’s artery of cerebral hemorrhage
Postero-medial from PCA, ant & med nuclei of thalamus + hypothalamus
Postero-lateral from PCA, lat & post parts of thalamus +metathalamus.
Largest is thalamogeniculate art

33
Q

Mention cortical sypupply of ACA

A

Medial surface ex occipital lobe
One inch strip of lateral surafce superiorly
Med part of orbital gyrus

34
Q

Describe supply & lesion of ACA

A

Motor & sensory areas of contralateral LL, thrombosis of a congenitally unpaired ACA leads to cerebral paraplegia

35
Q

Mention cortical areas supplies by MCA & functional supply & lesion

A

Lateral surface (ex parts of ACA & PCA)
Lateral part of orbital surface + temporal pole
Supplies motor & sensory areas of UL, speech & auditory areas + frontal eye fields.
Thrombosis is very serious & if occurs on dominant side aphasia occurs

36
Q

Mention cortical areas supplies by PCA & functional supply & lesion

A

All of occipital lobe
Strip along lower border of hemisphere on lateral surface
Inferior surface (tentorial part ex temporal lobe)
F: visual area of contralateral half of both visual fields. Its occlusion leads to homonymous hemianopia but there is macular sparing bec the branches supplying the macular region have strong anastomosis with MCA

37
Q

Describe superficial system of veins

A

Superior cerebral veins into SSS
Superficial middle cerebral vein into covernous connected to SSS & transverse sinus by sup & inf anastomotic veins respectively
Deep middle cerebral vein drain insula then join ant cerebral veins & striate vein to form basal vein that drains into great c.v.
Inferior cerebral vein into nearby sinus esp transverse

38
Q

Thalamostriate vein drains into……, which unites with other side to form……, which froms…..by uniting with……

A

Internal cerebral vein
Great cerebral vein
Straight sinus
Inf sagittal sinus

CNS Anatomy (19 decks)

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