Practical 3: External Topography of the Brainstem Flashcards by Niamh O Leary

Q

what does the brainstem consist of

A

medulla, pons and midbrain

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Q

where does the medulla become continuous with the spinal cord

A

at the foramen magnum

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Q

what cranial nerves come out of the medulla?

A

glossopharyngeal
vagus
spinal accessory
hypoglossal

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Q

what is the pontomedullary junction

A

where the pons meets the medulla

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Q

which cranial nerves exit from the pontomedullary junction

A

abducens
vestibulo-cochlear
facial

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Q

what cranial nerve emerges from the pons

A

trigeminal

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Q

what cranial nerve emerges from the midbrain

A

trochlear

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Q

what nerve emerges from between the cerebral peduncles

A

occulomotor

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Q

midbrain - crus cerebri of cerebri peduncles

A

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Q

midbrain - infundibulum (pituitary stalk)

A

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Q

midbrain - mammillary bodies

A

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Q

midbrain - interpeduncular fossa

A

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Q

midbrain - anterior perforated substance

A

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Q

midbrain - pineal body

A

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Q

midbrain - superior and inferior colliculi

A

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Q

midbrain - superior and inferior brachium

A

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Q

midbrain - superior cerebellar peduncle

A

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Q

midbrain - medial and lateral geniculate bodies

A

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Q

midbrain cranial nerves

A

CNIII (oculomotor)
CNIV (trochlear)

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Q

CNIII (oculomotor nerve)

A

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Q

CNIV (trochlear nerve)

A

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Q

pons - groove for basilar artery (basilar sulcus)

A

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Q

pons - pontomedullary junction

A

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Q

pons - middle and inferior cerebellar peduncles

A

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pons - superior medullary velum

pons - medial eminence

pons - sulcus limitans

pons - facial colliculus

pons - vestibular area

pons - striae medullares

pons - hypoglossal triangle (trigone of CNVII)

pons - vagal triangle (trigone of CNX)

pons cranial nerves

- CNV (trigeminal) - CNVI (abducent) - CNVII (facial) - CNVIII (vestibulocochlear)

CNV (trigeminal nerve)

CNVI (abducent nerve)

CNVII (facial nerve)

CNVIII (vestibulocochlear nerve)

medulla - ventral (anterior) median fissure

medulla - pyramids

medulla - olives

medulla - decussation of pyramids

medulla - gracile tubercle

medulla - cuneate tubercle

medulla - gracile fasciculus

medulla - cuneate fasciculus

medulla cranial nerves

- CNIX (glossopharyngeal) - CNXII (hypoglossal) - CNX (vagus) - CNXI (accessory)

CNIX (glossopharyngeal nerve)

CNXII (hypoglossal nerve)

CNX (vagus nerve)

CNXI (accessory nerve)

which foramen does CNI (olfactory nerve) pass-through

olfactory foramina in the cribriform plate

which foramen does CNII (optic nerve) pass-through

optic canal of sphenoid

which foramen does CNIII (occulomotor nerve) pass-through

superior orbital fissure

which foramen does CNIV (trochlear nerve) pass-through

superior orbital fissure

which foramen does CNV (trigeminal nerve) pass-through

- superior orbital fissure - foramen rotundum - foramen ovale

which foramen does CNVI (abducens nerve) pass-through

superior orbital fissure

which foramen does CNVII (facial nerve) pass-through

facial canal

which foramen does CNVIII (vestibulocochlear nerve) pass-through

internal auditory meatus

which foramen does CNIX (glossopharyngeal nerve) pass-through

jugular foramen

which foramen does CNX (vagus nerve) pass-through

jugular foramen

which foramen does CNXI (accessory nerve) pass-through

jugular foramen

which foramen does CNXII (hypoglossal nerve) pass-through

hypoglossal canal