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Anatomy Exam 4 > Skull Foramina > Flashcards

Skull Foramina Flashcards

1
Q

hypoglossal canal

A

CN XII (hypoglossal) exits

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2
Q

tympano-occipital fissure

A

CN IX (glossopharyngeal), CN X (vagus), and CN XI (accessory) exit through

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3
Q

tentorial process

A

tent for cerebellum

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4
Q

Internal acoustic meatus

A

CN VII (facial) and CN VIII (vestibularcochlear) enters through

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5
Q

Jugular foramen

A

CN IX (glossopharyngeal), CN X (vagus), and CN XI (accessory) enter through

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6
Q

stylomastoid foramen

A

CN VII (facial) exits through

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7
Q

external acoustic meatus

A

short bony canal where tympanic membrane attached
landmark between middle and external ear

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8
Q

tympanic bulla

A

air filled bony cavity
form tympanic cavity of middle ear, where 3 small ossicles live

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9
Q

orbital fissure

A

CN III (oculomotor), CN IV (trochlear), CN VI (abducens), and CN V branch 1 (ophthalmic) pass through

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10
Q

round foramen

A

CN V (trigeminal) second branch (maxillary) pass through

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11
Q

oval foramen

A

CN V (trigeminal) third branch (mandibular) pass through

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12
Q

hypophyseal fossa

A

fossa for hypophysis, in the middle of sella turcica

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13
Q

dorsum sellae

A

most caudal bony prominence of sella turcica

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14
Q

optic canal

A

CN II (optic n) passes through

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15
Q

chiasmatic groove

A

bony groove for the nervous structure optic chiasm (where optic nerves cross over)

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16
Q

cribiform plate

A

bony wall between cranial and nasal cavities
CN I (olfactory) goes through

17
Q

ethmodial labyrinth

A

projected from cribiform to nasal cavity and frontal sinus

18
Q

perpendicular plate

A

vertical bone projected from cribiform
-forms bony portion of septum

19
Q

infraorbital foramen

A

CN V (trigeminal) branch 2 (maxillary) exits through
rostral opening of infraorbital canal

20
Q

maxillary forament

A

CN V (trigeminal) branch 2 (maxillary) passes through
caudal opening of infraorbital canal

21
Q

infraorbital canal

A

bony canal between maxillary foramen and infraorbital foramen

22
Q

sphenopalatine foramen

A

have branches of CN V (trigeminal) branch 2 (maxillary)
goes toward nasal cavity

23
Q

caudal palatine foramen

A

have branches of CN V (trigeminal) branch 2 (maxillary)
goes toward hard palette

24
Q

mandibular foramen

A

caudal opening of mandibular canal
branch of CN V (trigeminal) branch 3 (mandibular) passes through

25
Q

mental foramen

A

rostral opening of mandibular canal
branches of CN V (trigeminal) branch 3 (mandibular)

Anatomy Exam 4 (4 decks)

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