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A-CNS Anatomy > Cerebral white matter > Flashcards

Cerebral white matter Flashcards

1
Q

بسم الله الرحمن الرحيم
______________________________
White matter is, ,,,,,,axons

Types ?

A

Myelinated axons
Association
Projection
Commiusral

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2
Q

Association fibers fibers connecting different regions in the same hemisphere which are either ?

A

Short fibers connecting gyri in same lobe
long fibers connecting gyri in Different lobes

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3
Q

Mention examp fo association fibers

A

LUCky
1-Superior longutidnal bundle :-
Connects the frontal with occipital lobe and tempral
Fronto occipital deep to it.sepatrated from it by corona radiata
_________________________
2-Inferior longitudinal bundle connecting the temporal with occipital
________________________________
3-Uncinate connecting Broca’s of frontal with Wernicke’s of tempral
__________________________________
4-Cingulae connecting cingulate gyrus with the Parahippocamal it is deep to limbic lobe

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4
Q

Connecting the cerebeal cortex with the lowercenters as brainstem diecnpalon and spinal cord

A

Projecton fibers forming ciad
Corona radiata
Internal capsule
either ascending or descending

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5
Q

Internal capsule is a band of projection fibers running between masses of grey matter describe relations

A

Medially: thalamus and Caudate nuceleus
Laterally : Lentifrom Nucleus
It is V shaped having anterior limb genu and posterior limb
sublentiform and retrolentifrom parts

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6
Q

Anterior limb realtions and conterts?

A

Between caudate medially and lentiform laterally
Contains:
FATR
Frontopontine fibers
Anterior Thalamic Radiation from the thalamus to frontal cortex

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7
Q

CorticoNuclear fivbers are part of pyramidal tract that ends in motor nuclei of cranial nerve
Show what part of intennal capsule involiving it?

A

GENU

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8
Q

Posterior Limb of Internal capsule relations and contents

A

Thalamus medially and lenifgorm laterally
Contents :-
FC2S
Forntopontine fibers
Corticospinal fibers antreior UL and pos LL
CorticoRubral fibers
Superior thalamic radiation from VPL/MN Of thalamus to sensory area of cortex SI II

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9
Q

Retrolentiform Part of Internal capsule site + contents

A

Site behind Leniform
Contents PO2
Paritopontine
OccipitoPontine
Optic Radiation

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10
Q

Sublentiform part of internal capsule site and contents

A

Below lentiform
Contents :-
PTA
Paritopontine
Tempropontine
Auditroy radiation

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11
Q

Describe blood supply of internal capsule

A

Upper 1/2 of the anterior and post limbs =Middle cerebral artery
Lower 1/2 of anterior limb + Genu = Anterior cerebral artery
Lower 1/2 of posteiror limb = Posterior communicating + Ant choroidal artery
Sublentifrom and retrolentiform = ? Anterior choroidal artery

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12
Q

Internal capsule is reqynelte labile to cerebrovascular accident so ?

A

Hemiplegia
hemianasthesia
UMN cranial nerve 7 - 12 lesion

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13
Q

Commisural fibers connect coressponding area in Rt and Lt hemispheres across the midline they include :

A

3C2H
Corpus callosum
Ant commisue
post commisure
hHebanuslar
Hippocamapl comissures

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14
Q

The largest commisural fibers are?

A

Corpus callosum

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15
Q

Mention parts of corpus callosum

A

Rostrum
genu
body
splenium

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16
Q

Connects the 2 orbital surfaces of frontal lobes?

A

Rosrtrum

17
Q

Forceps minor?

A

Fibers of Genu of Corpus callosum connectin medial and lateral surfaces of 2 frontal lobes

18
Q

Intersecing with coronradiata ! and has wide area of connectons for 2hemishpers Temporal parital and occipital lobes

A

Body or trunk of corpus callosum

19
Q

Tapetum = ,,,+,,,,

A

Post body + ant splenium of corpus callosum

20
Q

Forming roof and lateral wall of post horn of lateral ventricle ?

A

Tapetum of Corpus callosum

21
Q

Forming the bulb of posterior horn of lateral ventricle?

A

Splenium or forceps major

22
Q

Forceps major?

A

Fibers of splenium of corpus callosum
curving back to occipital lobes

23
Q

ANteiror commisure
Is embedded in .,,,,,,,,,,,, anterior to ,,,,,,,,,,
Splitting into anterior and posterior bundle mention connectons!

A

Lamina terminalis
Column of Fronix
______________________
Anterior bundle connecting the anterior perforated substance + olfactory Tracts
Posterior bundle connecting ? Temporal gyri !

24
Q

Posterior commisure is embeded in ,,,,,,,, of ,,,,,,
connceting ?

A

lower lamina of pineal stalk
Connecting:-
RSM
Superior colliclu
Rt and Lt pretecta Nuclei
Medial longuitdinal bundles

25
Q

In upper lamina of pineal stalk connecting 2 habenular nculei
?>

A

Habenular commisure

26
Q

Hippocamapl commisure called

A

Commisure of fronix as it connects 2 crura of fronix so connceting right and left hippocampus

27
Q

الحمدلله رب العالمين\

A

A-CNS Anatomy (27 decks)

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