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A-CNS Histo > GREY AND WHITE > Flashcards

GREY AND WHITE Flashcards

1
Q

بسم الله الرحمن الرحيم وبه نستعين

FIBERS BELONG TO WHICH MATTER?

A

Unmyleinated grey
Myleinated White

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2
Q

white and grey matter have in common ?

A

Neuroglia + blood capillaries

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3
Q

ganglion containds and surroudnded
by
DRG

A

Neurons +fibers +neuroglia
fuisform and surrounded by vascular fibrous capusle in intervertebral foramen

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4
Q

رب اجعل لي في وقتي بركة
رب اجعل لي في وقتي بركة
رب اجعل لي في وقتي بركة
grey matter formed of ?
Nerve cells which are “?
Fibers unmyelinated
Neuroglia
blood capillaries

A

Multipolar

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5
Q

grey matter neucli appear in all spinal segments

A

-PosteroMarginal
-Substantia gelatinosa it evident in cervical + lumbar
-Main Sensory Nucleus

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6
Q

Nuclei for pain temp and crude touch

A

1,2,3 Of Main sensory Nucleus

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7
Q

Clarkes nucleus found betweem ?

A

c8-L3

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8
Q

Preganglionic sympathtaic in lateral horn in which nuclei ?

A

in intermediolateral nucleus from t1-l2

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9
Q

Preganglioninc parasmypathatic fibers appear in /

A

sacral segments 234
lateral surface of anterior horn

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10
Q

nuecli of ventral horn of spinal cord contains ?

A

Smatic efferent neurons :
alpha motor neuron
y motor neurons

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11
Q

medial neuclar group of ventral horn includes ?

A

1-ventromedial
2-posteromedial
for neck and back
mucels

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12
Q

lateral nuclear group of ventral horn contains ?

A

anterior
anterolateral
posterolateral
retro posterolateral
central nuclei\
the five appears in cervical and lumbar but in thoracic compensated as one lateral Nuclus

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13
Q

Most medial muscles suppleied by ?
most distal mucels supplied by ?

A

1- medial = most medial nuclei
2- distal = most lateral nuclei
_____________

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14
Q

hand is upplied by ?
foot is supplied by ?

A

retroposrtolateral of cervical
retroposterolateral of lumbar

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15
Q

flexors supplied by?
Externsors supplied by ?

A

flexor=posterior nuclei
externsor =anterior nuclei

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16
Q

how to get cytoarchitetcural lamination of grey matter

A

thick segmetns of spinal cord stained with Cresyl violet
Rexed

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17
Q

Lamina 12345789

A

1 posteromarginal nucleus
2 substantia gelationsa
34 main sensory nucleus
56 retuclar nucleus
7 clarkes interomeidomediallateral
8 termination of extrapyramidal tract
9 medal lateral anterior horn

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18
Q

White matter is divied into :

A

Dorsal white column
lateral white column
ventral while column

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19
Q

white matter -

A

Tracts + neuorglia + blood capillaries

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20
Q

What is tract ?

A

nerve fibers collected have same origin path termination function

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21
Q

Loong tracts dived into ?

A

Ascending :
Propriceptive
Exteroceptive
Descneding:
PPyramidal
ExtraPyramidal

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22
Q

Proprioceptive pathaways

A

cortical :
graciel+cunate
___________
cerebellar
Dorsal and ventral spinocerebellar
Cuneocerebellar
SpinoOlivary

23
Q

GRACILE TAKE IMPULSES FROM ?

A

SACRAL LUMBAR LOWER THORACIC

24
Q

CUNATE

A

UPPER 6 THORACIC +CERVICAL

25
Q

dIRECT UNCORSSED ?

A

dorasl spinocerebellar tract

26
Q

dorasl spinocerebellar tract function

A

Coordination of posture and movment of individual limb muscle

27
Q

Compare between dorsal and ventral spinocerebellar tract in Origin ?

A

dorsal clarkes
ventral : lamia 5-6-7 lumbar and sacral region

28
Q

Compare between dorsal and ventral spinocerebellar tract in Termination

A

Dorsal ICP
ventral scp

29
Q

Compare between dorsal and ventral spinocerebellar tract in Crossing

A

Dorsal uncrossed
Ventral crossed x2

30
Q

Compare between dorsal and ventral spinocerebellar tract in FUNCCTION

A

DORSAL Give information about indivdual limb muscle
Ventral give information about whole limb

31
Q

External arcuate fibers formed by?

A

Sensory dexussation of cunate and gracile nucli fibers

32
Q

Function of cunocerebellr tract ?

A

Equivalent of dorsal spincerebellat tract but in upper limb only as it is above c8

33
Q

Indirect spinocerebellar tract is

A

SpinoOlivary pathwaaaaaaaaay

34
Q

Spino olivary pathway relay on ?

A

lamina 4 5 medial 7,8
then cross then asends between vental and lateral white columns to terminate in inferior olivary nucleus then sends
Olivo Cerebellar tractMOVING through ICP

35
Q

Function of spinoloivary tract
indeirect spinocerebellum

A

Motor learning
Subconsouos propriceptive impulses to cerebellum whenever a new movment in learned

36
Q

pROPRIOCEPTIVE SNESATIONS CARRIED TO CEREBELLUM THROUG ?

A

1-From C8-L3 dorsal spinocerebellar tract
2-above c8 cuneocerebellat tract
3-below l3 enters DRG then with gracile tract in posterior column then until clarke nuclei leaving gracile ascending in dorsal spinocerebellar tract

37
Q

Exteroceptive pathways?

A

Lateral spinothalamic pain temp
ventral spinothalamic crufe touch
spino tecetal
spinoreticular

38
Q

latral spino thalamic carries?

A

Fast pain
Temp narrow range

39
Q

ventral spinothalamic carries?

A

Crude touch

40
Q

Lateral and ventral spinothalamic ascends in ?

A

spinal lemincsuc
and works contralaterally

41
Q

Spinotecetal tract termination and function

A

superior colliculus of midbrain Center of vision
Reflex movments of the neck towards visual stimuli

42
Q

SpinoReticular tract terminates in ?

A

Reticular formation in brain stem
فكر ثلاثا !
function is ?
transmitting slow dull aching pain with dorsal column tract medial lemiscus

43
Q

pyramidal tract imp in ?

A

gross movments
aids in fine movemrrnts
“Voluntary”

44
Q

Extrapyramidal tracts

A

Rubro
tecto
vestibulo
reticulo
medial longitudkinal buindle

45
Q

Explain rubrospinal tracct

A

from red nucleus of midbrain then through tementum of midbtain corssing ventral tegmental decussation descends in lateral while colu,mns till AHCs
function :
Facilitatroy impulses to muscle ton of flexor group from cortex + cerebellum

46
Q

explian tectospinal tract

A

From superio colliculus of midbrain crossing tegmentum as dorsaaaaaaal tegmental decussation till the AHCs of Cervcial Segments
function :
Reflex Postural adjustments due to Visual and Audiotry stimuli

47
Q

Vestibulospinal tract functon ?

A

Strong Excitatory impulses for antigravity muscles
Strong Excitatory impulses for antigravity muscles
Strong Exicatoty imuluses for antigravity muscles

48
Q

Diteres nucleus is for ?>

A

Lateral Vestiibulospinal tract

49
Q

Medial Vestibulsospinal tract coniotues till ?

A

MId thoraci level

50
Q

احرص علي ما ينفعك
احرص علي ما ينفعك
اسرع!
من خاف أدلج!

A

ومن أدلج بلغ المنزل

51
Q

functions of Retiuclospinal tract ?

A

The reticular formation can influence muscle tone by acting on gamma neuros supplying the Contractile parts part of muscle spindle

52
Q

Medial longitukdinall bundle formed of ?

A

Pontine Reticular fiber
Vestibulospinal
Tectospinal
Intersitiospinal

53
Q

Short tracts

A

Leissaurs tract pain modulation
comma shpaed tract stretch reflex arc cunate
septomarginal tract stretch refglex arc gracile
Faasiculus proprius interconnect nerons in different spinal segments

54
Q

وطب نفسا اذا حكم القضاء

A

A-CNS Histo (7 decks)

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