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neuro 2nd shift > brainstem - internal anatomy of pons > Flashcards

brainstem - internal anatomy of pons Flashcards

1
Q

shallow midline groove for
the basilar artery

A

basilar groove

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2
Q

rostral boundary of anterior pons

A

cerebral peduncles
superior pontine sulcus

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3
Q

lateral boundary of anterior pons

A

middle cerebellar peduncles

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4
Q

caudal boundary of anterior pons

A

inferior pontine sulcus

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5
Q

Emerge on anterolateral surface of anterior pons

A

trigeminal nerve

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6
Q

discuss roots of trigeminal nerve

A

smaller medial motor root

larger lateral sensory root

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7
Q

emerges between pons and medulla; pontomedullary junction

A

abducens nerve

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8
Q

emrgers at the cerebellopontine angle or the angle between caudal pons, rostral medulla and cerebellum

A

Facial nerve and Vestibulocochlear

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9
Q

the posterior surface of pons is limited lat by _____

A

superior cerebellar
peduncles

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10
Q

what divides the posterior surface of pons

A

medial sulcus or fissure of
SC and the medulla

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11
Q

elongated elevation at post pons lateral to the median sulcus; bounded laterally by the sulcus limitans

A

Medial eminence

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12
Q

Produced by root of facial nerve winding around the abducens nucleus; expanded inferior end of the medial eminence

A

Facial colliculus

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13
Q

found Floor of superior part of sulcus limitans

A

Substanstia ferruginea

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14
Q

Substanstia ferruginea is respo for what

A

attention, wakefulness and mood - norepi

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15
Q

Substanstia ferruginea is aka as

A

locus ceruleus

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16
Q

Produced by underlying vestibular nuclei and is lateral to sulcus limitans

A

Area vestibuli (vestibular area)

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17
Q

2 levels of internal pons

A

Transverse section through the caudal part passing through the facial colliculus

Transverse section through trigeminal nuclei

18
Q

what can be found at Transverse Section Through Caudal Part

A

medial lemn

facial nuc

19
Q

the medial lemn is accompanied by _____

A

spinal and lateral lemnisci

20
Q

medial lemn will higa then is accompanied by _____

A

spinal and lateral lemnisci or spinothalamic and auditory respectively

21
Q

Lies posterior to the lateral part of the medial lemniscus

A

Facial Nucleus

22
Q

Fibers of facial nerve wind around the abducens nucleus producing the ______

A

facial colliculus

23
Q

found at the Transverse Section Through Caudal Part

A

MLF

medial vestib nuc

spinal nuc of trigeminal nerve and its tract

trapezoid body

basis

24
Q

purpose of MLF

A

Main pathway connecting vestibulocochlear nuclei with nuclei controlling EOMs (oculomotor, trochlear, abducens)

conjugate eye movement

25
Q

Superior part of lateral and the inferior part of the superior vestibular nucleus

A

Medial Vestibular Nucleus

26
Q

Anteromedial aspect of inferior cerebellar peduncle

A

Spinal Nucleus of Trigeminal Nerve and its tract

27
Q

Fibers derived from cochlear nuclei and nuclei of trapezoid body

A

Trapezoid Body

28
Q

significance of trapezoid body

A

Crossing auditory fibers

29
Q

what does basis contain

A

pontine nuclei

30
Q

_____ terminate in pontine nuclei

A

corticopontine fibers of crus cerebri

31
Q

found at the Transverse Section Through the Cranial Part

A

Motor Nucleus of Trigeminal Nerve

Principal Sensory Nucleus of Trigeminal Nerve

Superior Cerebellar Peduncle

Trapezoid Body Medial Lemniscus Spinal lemniscus
Lateral Lemniscus

Middle Cerebellar Peduncle (brachium pontis)

32
Q

Motor fibers of trigeminal nerve travel _____ and exit on _____

A

anteriorly and anterior surface

33
Q

On lateral side of motor nucleus of trigeminal

A

Principal Sensory Nucleus of Trigeminal Nerve

33
Q

Principal Sensory Nucleus of Trigeminal Nerve continous inferiorly ______

A

with the nucleus of
spinal tract

34
Q

Posterolateral to the motor nucleus of the trigeminal nerve

A

Superior Cerebellar Peduncle

35
Q

Superior Cerebellar Peduncle joint by ________

A

anterior spinocerebellar tract

36
Q

Lateral to medial lemniscus

A

Lateral Lemniscus

37
Q

what is lateral lemn

A

ascending auditory tract from cochlear nuclei to inferior colliculus

38
Q

largest cerebellar peduncle

A

middle

39
Q

what does the brachium pontis carry (MCP)

A

pontocerebellar tracts
corticopontine
and towards cerebellum

contricopontomedullar

40
Q
A

neuro 2nd shift (21 decks)

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