GREY AND WHITE

Question 1

بسم الله الرحمن الرحيم وبه نستعين

FIBERS BELONG TO WHICH MATTER?

Answer 1

Unmyleinated grey
Myleinated White

Question 2

white and grey matter have in common ?

Answer 2

Neuroglia + blood capillaries

Question 3

ganglion containds and surroudnded
by
DRG

Answer 3

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

Question 4

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

Answer 4

Multipolar

Question 5

grey matter neucli appear in all spinal segments

Answer 5

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

Question 6

Nuclei for pain temp and crude touch

Answer 6

1,2,3 Of Main sensory Nucleus

Question 7

Clarkes nucleus found betweem ?

Answer 7

c8-L3

Question 8

Preganglionic sympathtaic in lateral horn in which nuclei ?

Answer 8

in intermediolateral nucleus from t1-l2

Question 9

Preganglioninc parasmypathatic fibers appear in /

Answer 9

sacral segments 234
lateral surface of anterior horn

Question 10

nuecli of ventral horn of spinal cord contains ?

Answer 10

Smatic efferent neurons :
alpha motor neuron
y motor neurons

Question 11

medial neuclar group of ventral horn includes ?

Answer 11

1-ventromedial
2-posteromedial
for neck and back
mucels

Question 12

lateral nuclear group of ventral horn contains ?

Answer 12

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

Question 13

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

Answer 13

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

Question 14

hand is upplied by ?
foot is supplied by ?

Answer 14

retroposrtolateral of cervical
retroposterolateral of lumbar

Question 15

flexors supplied by?
Externsors supplied by ?

Answer 15

flexor=posterior nuclei
externsor =anterior nuclei

Question 16

how to get cytoarchitetcural lamination of grey matter

Answer 16

thick segmetns of spinal cord stained with Cresyl violet
Rexed

Question 17

Lamina 12345789

Answer 17

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

Question 18

White matter is divied into :

Answer 18

Dorsal white column
lateral white column
ventral while column

Question 19

white matter -

Answer 19

Tracts + neuorglia + blood capillaries

Question 20

What is tract ?

Answer 20

nerve fibers collected have same origin path termination function

Question 21

Loong tracts dived into ?

Answer 21

Ascending :
Propriceptive
Exteroceptive
Descneding:
PPyramidal
ExtraPyramidal

Question 22

Proprioceptive pathaways

Answer 22

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

Question 23

GRACILE TAKE IMPULSES FROM ?

Answer 23

SACRAL LUMBAR LOWER THORACIC

Question 24

CUNATE

Answer 24

UPPER 6 THORACIC +CERVICAL

Question 25

dIRECT UNCORSSED ?

Answer 25

dorasl spinocerebellar tract

Question 26

dorasl spinocerebellar tract function

Answer 26

Coordination of posture and movment of individual limb muscle

Question 27

Compare between dorsal and ventral spinocerebellar tract in Origin ?

Answer 27

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

Question 28

Compare between dorsal and ventral spinocerebellar tract in Termination

Answer 28

Dorsal ICP ventral scp

Question 29

Compare between dorsal and ventral spinocerebellar tract in Crossing

Answer 29

Dorsal uncrossed Ventral crossed x2

Question 30

Compare between dorsal and ventral spinocerebellar tract in FUNCCTION

Answer 30

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

Question 31

External arcuate fibers formed by?

Answer 31

Sensory dexussation of cunate and gracile nucli fibers

Question 32

Function of cunocerebellr tract ?

Answer 32

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

Question 33

Indirect spinocerebellar tract is

Answer 33

SpinoOlivary pathwaaaaaaaaay

Question 34

Spino olivary pathway relay on ?

Answer 34

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

Question 35

Function of spinoloivary tract indeirect spinocerebellum

Answer 35

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

Question 36

pROPRIOCEPTIVE SNESATIONS CARRIED TO CEREBELLUM THROUG ?

Answer 36

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

Question 37

Exteroceptive pathways?

Answer 37

Lateral spinothalamic pain temp ventral spinothalamic crufe touch spino tecetal spinoreticular

Question 38

latral spino thalamic carries?

Answer 38

Fast pain Temp narrow range

Question 39

ventral spinothalamic carries?

Answer 39

Crude touch

Question 40

Lateral and ventral spinothalamic ascends in ?

Answer 40

spinal lemincsuc and works contralaterally

Question 41

Spinotecetal tract termination and function

Answer 41

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

Question 42

SpinoReticular tract terminates in ?

Answer 42

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

Question 43

pyramidal tract imp in ?

Answer 43

gross movments aids in fine movemrrnts "Voluntary"

Question 44

Extrapyramidal tracts

Answer 44

Rubro tecto vestibulo reticulo medial longitudkinal buindle

Question 45

Explain rubrospinal tracct

Answer 45

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

Question 46

explian tectospinal tract

Answer 46

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

Question 47

Vestibulospinal tract functon ?

Answer 47

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

Question 48

Diteres nucleus is for ?>

Answer 48

Lateral Vestiibulospinal tract

Question 49

Medial Vestibulsospinal tract coniotues till ?

Answer 49

MId thoraci level

Question 50

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

Answer 50

ومن أدلج بلغ المنزل

Question 51

functions of Retiuclospinal tract ?

Answer 51

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

Question 52

Medial longitukdinall bundle formed of ?

Answer 52

Pontine Reticular fiber Vestibulospinal Tectospinal Intersitiospinal

Question 53

Short tracts

Answer 53

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

Question 54

وطب نفسا اذا حكم القضاء