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MedNeuro > Medulla > Flashcards

Medulla Flashcards

1
Q

Rostral flared part of medulla

A

4th ventri

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2
Q

Crnaial nerves associated with medulla

A

6-12

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3
Q

Blod supply of medulla

A

From vertebrala rtery

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4
Q

Medulla contains medullary reticular formation cell groups that influence

A

Heart rate

respiration

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5
Q

Maturaing neurons of the basal plate in medulla give rise to

A

Hypogloss SE
Dorsal motor vagal nuceli VE
Inferior salivary nucleus VE
Nucleus ambiguus SE

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6
Q

Cranial nerves derived from alar plate of medulla

A

Vestibular SA
Cochlear SA
solitary VA
spinal trigeminal SA

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7
Q

Aalr plate neuroblast caudla to obex gives rise to

A

Gracile nucleus

Cuteata nucleus

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8
Q

Alar palte cells caudal to obex gives rise to

A

Nuferior olivay nucleus

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9
Q

Prominent bundle of axons collect in the anterior of he medulla to form

A

Pyramids

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10
Q

Medulla is characterized externally by

A

Anterior median fissure
Lateral pyrimds
Olive (inf olivary eminence)

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11
Q

Crossing of most fibers of the pyramids, arising from the motor cortex as corticospinal fibers, is called

A

Motor decussation

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12
Q

The rootlet of gypogloss nerve exit exit the medulla via _____, a shallow grooce located between pyramid and olive

A

Preolivary sulcus

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13
Q

Abducens emerges where

A

Pondmedullary joint

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14
Q

Found between restiform body and the large eminence of the inferior olivary nucleus

A

Postolivary/retroolivary sulcus

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15
Q

The retoro/postolovaty sulcus us found between

A

Restiform body and eminence of ifnerior olivary nucleus

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16
Q

What emerge from the postolivary sulcus

A

Glossopha

Vagus

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17
Q

Emerge from the posterolateral medulla at the pons medulla interface

A

Vestibulo

Facial

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18
Q

General region of the exit of the facial and vestibulochoch is clincally regarded as the

A

Cerebellopontine angle

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19
Q

Tumor of the vestibular portion if the eight cranial nerve and is a lesion licated ate the cerbeellopontine angle

A

Vestibular schwannoma

20
Q

Vestibular schwannoma lesion is found where

A

Cerebelloponting angle

21
Q

In the lateral surface, caudal to the obex, fibers of the spinal trigeminal nucleus and tract assume a superficial location and form the

A

Trigeminal tubercle (tuberculum cinereum)

22
Q

progressively enlarging body external to the trigeminal fibers rostral to the obex

A

restiform body

23
Q

posteior medulla caudal to obex is characterized by

A

gracile
cuneata
respective tubercles

24
Q

prominent elevation on the posterolateral aspect of the medulla

A

restiform body

25
Q

restiform body progressively becomes larger as it goes toward

A

ponsmedulla junction

26
Q

restiform body joins with what in the pons

A

juxtarestiform body

27
Q

exception in the blood supply from verebral arteries

A

choroid plexus that extends out of the uschka and adjacent cochlear nuclei

28
Q

blood supply of the are not supplied by vertebral arteries

A

anterior inferior cerebellary artery (from basilar)

29
Q

in general, medial medulla is served by (blood supply)

A

anterior spinal artery

30
Q

in general, anterolateral medulla is served by (blood supply)

A

vertbera; artery

31
Q

in general, posterolateral medulla is served by (blood supply)

A

posterior inferior cerbellar artery (PICA)

32
Q

lesion in anterior spinal artery causes somatosensory and motor deficit reflecting damage where

A

medial lemniscus
hypogloss root
corticospinal fibers in pyrmaids

33
Q

lesions in PICA will damage

A

anterolateral system

spinal trigeminal tract and nucleus

34
Q

tracs that convey pain and temperature inputts to more rostral levels

A

spinomesencephalic

spinothalamic fibers

35
Q

ascending tracts in the medulle are continuations of what from the spinal cord gray matter

A

anterlateral system

posterior and antrior spinocerebellar tracts

36
Q

ascending tracts in the medulla are cotinuation of what from the posterior root ganglion cells

A

gracile

cuneate fasciculi

37
Q

tactile and vibratory information carried by posterior column fibers continue rostrally via what

A

medial lemniscus

38
Q

spinocerebellar axons enter the cerebellum through _____ (posterior) or ___(anterior)

A

restiform

superior cerebellar peduncle

39
Q

The descending tracts that originate from the cerebral cortex are what

A

corticospinal

40
Q

The descending tracts that originate from themidbrain are what

A

reticulospinal

vestibulospinal

41
Q

The spinal cord–medulla transition is characterized by changes that begin at the caudal level of the

A

motor decussation

42
Q

at the level of the motor decussation (pyramidal decussation), about 90% of corticospinal fibers cross the anterior midline to form the contralateral

A

lateral corticospinal tract

43
Q

Internal to the spinal trigeminal tract

A

spinal trigeminal nucleus

pars caudalis

44
Q

laterally, the spinal trigeminal tract is visible on the surface of the medulla as the

A

trigeminal tubercle

tuberculum cinereum

45
Q

anterior medulla contains the most rostral part of the

A 
accessory nucleus (cranial nerve XI)
 remnants of the medial motor cell column of C1
medial longitudinal fasciculus and tectobulbospinal syste
46
Q

accessory nucleus (cranial nerve XI), remnants of the medial motor cell column of C1, and the medial longitudinal fasciculus and tectobulbospinal syste

A

hypoglossal (XII) and dorsal motor vagal (X) nuclei

47
Q

it is the point at which a major ascending sensory pathway (posterior

A

sensory decussation

MedNeuro (3 decks)

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