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CNS > Histo > Flashcards

Histo Flashcards

1
Q

Basis points receive impulses from cerebral cortex through ?

A

Corticopontine fiber

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2
Q

What is the origin of Transverse pontine fiber ?

A

Axon of pontine nuclei

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3
Q

Transverse pontine fiber end as witch in cerebral cortex?

A

As mossy fibres

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4
Q

Trapezoid body in facial colliculus form by axon of ………….. cross the opposite side in the venral part of the tegmentum ?

A

Both cochlear nuclei

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5
Q

16- WOTF is present at the cerebellar white matter?

A

fibrous astrocytes

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6
Q

WOTF describes lower pons?

A

has facial motor nucleus

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7
Q

18- WOTF best describe the cerebellum?

A

molecular layer has numerous stellate cells

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8
Q

19- WOTF cranial nuclei is present at medulla?

A

IX

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9
Q

20- 2nd order neuron of paleospinothalamic t ?

A

SGR

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10
Q

21- WOTF is correct regarding lateral corticobublar tract ?

A

descend in the genu of internal capsule

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11
Q

WOTF tract is present in lumber segment of spinal cord ?

A

Spino olivary

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12
Q

Trapezoid body in facial colliculus form by axon of ………….. cross the opposite side in the venral part of the tegmentum ?

A

Both cochlear nuclei

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13
Q

14-WOTF is correct regarding cerebellum ?

A

it has numerous satellte cell in molucler level

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14
Q

15-which cell from the following is present in white matter of cerebrum ?

A

fibrous astrocyte

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15
Q

16-which of the following tract is present in lumber segment of spinal cord ?

A

Spino-olivary

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16
Q

17-WOTF cranial nerve neuclus is present in medulla oblongata ?

A

Glossopharyngeal

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17
Q

18- lateral paleothalamic tract rely on which neuclus?

A

SGR

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18
Q

19- WOTF is correct regarding lateral corticobublar tract ?

A

descend in the genu of internal capsule

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19
Q

2nd order neurons for pain and temperature pathways

A

SGR

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20
Q

Clarck nucleus from C….-L….

A

C٨-L٣

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21
Q

Clarck nucleus form 2nd order neurons in the pathways of ?

A

Proprioceptive sensation to the cerebellum*

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22
Q

Dorsolatral and ventrolateral and central nuclei in ventral horn of grey matter is absent in which?

A

Thoracic

23
Q

Where you can find nuclei of lateral horn of grey matter and which contains?

A

In Thoracic and upper 2 lumber only (contains sympathetic intermedio-Lateral nucleus

24
Q

Absent tract in upper thoracic

A

Desc:
1-olivospinal t
2- lateral tectospinal t
3- ventral vistibulospinal t

25
Q

Absent tract in Lower thoracic

A 
Comma shaped t (short)
Cuneate t( Asc)
Direct pyramida t (Desc)
26
Q

Absent tract in Lumber

A 
Comma shaped t (short) 
Rubero spinal t (Desc)
Tectospinal t (Desc)
27
Q

Absent tract in lower lumber segment?

A

Spinocerebellar t (asc)

28
Q

In closed M.O at level of motor decussation has the same tract in Asc and (Desc exept sulcomarginal and ventral vestibulospinal tract are replaced by……….?

A

Medial longitudinal bundle MLB

29
Q

In closed M.O at level of sensory decussation. Nuclei of which cranial n. Can be found?

A

X

XII

30
Q

In closed M.O at level of sensory decussation. Which Can be found?

A
  • Arcuat nucleus
  • lateral cuneate nucleus and tract
  • Dorsal and medial accessory olivary nuclei
31
Q

WOTF in dorsolateral part of open M.O ?

A

Inf. Cerebllar Peduncle

32
Q

Where the medial and inferior vestibular nuclei start to appear

A

In dorsal part of open medulla

33
Q

Ascending t in open M.O

A

1- Ven.spinocerebellar tract
2-Lat & Ven. Spinothalmic t
3- Spinotectal tract

34
Q

Descending tracts in open M.O

A

1-Rubrospinal t
2-vestibulospinal t
3- reticulospinal t
4- medial tectospinal t

35
Q

Cochlear of VIII from the bipolar nerve cells of the ….. in the cochlea(middle ear ) and end in ………….

A

Spiral ganglia- dorsal and ventral cochlear nuclei

36
Q

Vistibular of VIII from the bipolar nerve cells of the ….. in the inner ear and end in ………….

A

Vestibular ganglia (scarpas ganglia) — the axon enter pons at ponto-medullary junction to end in medial,lateral,superior,inferior vestibular nuclei

37
Q

WOTF is the center for auditory reflex?

A

Inf. Colliculus at tectum of midbrain

38
Q

WOTF controls the conjugation movement of the eye

A

Superior colliculus

39
Q

Motor nuclei of eye ms from have eff from tectum at superior colliculus?

A

Tectobulbar tract

40
Q

Lateral tectospinal t eff from ?

A

Lateral from tectum at superior colliculus

“Ventral from inferior “

41
Q
  1. Which of the following histological features best describes the microscopie structure of the Pacinian corpuscle?
A

A) It is non-encapsulated nerve ending.

B) It has unmyelinated nerve terminal.✅

C) Its axon is myelinated by oligodendrocytes.

D) Its nerve terminal is ensheathed in protoplasmic astrocytes.

E) Its nerve terminal is surrounded by 60 layers of fibrous astrocytes

42
Q
  1. Which of the following histological features best describes the structure of lumbar segments of the spinal cord?
A

A) Its lateral column of white matter contains lateral

reticulospinal tract✅

B) Its posterior hon of grey matter has the postero-lateral motor nucleus

C) Its ventral column of white matter contains ventral vestibulospinal tract.

D) Its posterior column of white mater contains the cuneate tract

E) Its anterior horm of grey matter has Clark’s nucleus

43
Q
  1. Which of the following best describes the structure of closed medulla at the level of sensory decussation?
A

A) It contains the lateral lemniscus

B) It has the central canal anteriorly.

C) It has the pyramids dorsally (posteriorly). D) It contains the corticospinal tract laterally.

E) It contains large gracile nucleus✅

44
Q
  1. Which of the following histological features best describes the structure of the superior level of pons?
A

A) It contains lateral lemniscus.✅

B) It contains Edinger-Westiphal nucleus

C) It contains the central canal anteriorly.

D) It contains substantia nigra in its tegmentum.

E) Its tegmentum contains the nucleus of abducent nerve.

45
Q
  1. Which of the following histological features best describes the slow pain pathway?
A

A) Their first order neurons are located in anterior horn cells

B) Their second order neurons are those of substantia

gelatinosa of Rolando.✅

C) Their third order neurons are located in the posterolateral ventral nucleus of thalamus.

D) The axons of the second order neurons ascend in the same side of spinal cord.

E) The axons of the third order neurons terminate in the precentral gyrus of cerebrum

46
Q
  1. Which of the following histological features best describes the medial corticobulbar tract pathway?
A

A) It forms pyramids in basis pontis.

B) It descends in the posterior limb of internal capsule.

C) It originates from the motor area 4 of cerebral cortex.

D) It terminates by synapsing with the motor nucleus of abducent nerve.✅

E) In upper medulla, majority of its fibers crosses to the opposite side.

47
Q
  1. Which of the following best describes the mieroscopic structure of cerebellum? A) Purkinje cell layer of gray matter is the most superficial one.
A

B) Molecular layer of gray matter houses numerous stellate

cells✅

C) Granule cell layer of gray matter has many basket cells.

D) Molecular layer of gray matter has multiple granule cells

E) Its white matter has efferent mossy fibers.

48
Q

What is the Different between motor and sensory area of cerebral cortex?

A

Motor:

  • large Betz cell
  • few stellate cells

Sensory:

  • many stellate cell
  • few pyramidal cell
49
Q

Most important cell in the molecular layer of cerebral cortex ?

A

Horizontal cell of cajal

50
Q

I.C.P (restiform)

Aff?

A 
Aff: VORD
V-vestibulocerebellar fiber 
O-olivocerebellar
R-reticulocerebellar 
D-doral spinocerebellar
51
Q

I.C.P (restiform)

Eff?

A

Eff: VOR عكس الاول
V- Cerebellovistbular
O- Cerebellolivary
R- Cerebelloreticular

52
Q

WOTF from Brachium points

A

Cerebro-ponto-cerebellar

53
Q

Write Aff and eff from brachium conjunctivium ?

A

AFF: TRV
T-tecto-cerebellar
R-rubro-cerebellar
V-ventral spinocerebellar t. الأشهر والاهم

Eff: ThRR
Th- cerebello-thalmo-cortical
R-cerebello-rubro-spinal
R-cerebello-reticulo-spinal

CNS (5 decks)

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