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Gross Section II > Foramen of Skull > Flashcards

Foramen of Skull Flashcards

1
Q

Cribiform plate

A

A. CN I (olfactory nerve) fibers

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2
Q

Foramen cecum

A

A. Emissary vein from nasal cavity to superior sagittal sinus

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3
Q

Posterior ethmoidal foramen

A

A. Posterior ethmoidal nerve, artery & vein

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4
Q

Anterior ethmoidal foramen

A

A. Anterior ethmoidal nerve, artery & vein

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5
Q

Sphenopalatine foramen

A 
A. Sphenopalatine artery & vein
--1. Posterior lateral nasal branches
--2. Posterior septal branches
B. Nasopalatine nerve (from CN V2)
C. Posterior lateral nasal nerves (from CN V2)
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6
Q

Optic canal

A

A. CN II (optic nerve)
B. Ophthalmic artery
C. Sympathetic fibers from internal carotid plexus

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7
Q

Superior orbital fissure

A

A. CN III (oculomotor nerve)
B. CN IV (trochlear nerve)
C. CN V1 (ophthalmic nerve – 1st branch of trigeminal nerve) D. CN VI (abducens nerve)
E. Superior ophthalmic vein
F. Lacrimal artery
G. Sympathetic fibers from internal carotid plexus

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8
Q

Inferior orbital fissure

A

A. Infraorbital nerve (from CN V2)
B. Infraorbital artery & vein
C. Zygomatic nerve (from CN V2)
–1. Zygomaticotemporal nerve, artery & vein
–2. Zygomaticofacial nerve, artery & vein

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9
Q

Supraorbital foramen or notch

A

A. Supraorbital nerve, artery & vein

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10
Q

Infraorbital foramen

A

A. Infraorbital nerve, artery & vein

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11
Q

Zygomaticotemporal foramen

A

A. Zygomaticotemporal nerve (from CN V2) emerges from here onto temple`

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12
Q

Alveolar canal

A

A. Posterior superior alveolar nerve (from CN V2)

B. Posterior superior alveolar artery & vein

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13
Q

Foramen rotundum

A

A. CN V2 (maxillary nerve – 2nd branch of trigeminal nerve)

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14
Q

Foramen ovale

A

A. CN V3 (mandibular nerve – 3rd branch of trigeminal nerve)

B. Accessory meningeal artery

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15
Q

Internal acoustic (auditory) meatus

A

A. CN VII (facial nerve)
B. CN VIII (vestibulocochlear nerve)
C. Labyrinthine (internal auditory) artery

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16
Q

External acoustic (auditory) meatus

A

A. Tympanic membrane (blocks entrance to middle ear cavity)

17
Q

External acoustic (auditory) meatus

A

A. Tympanic membrane (blocks entrance to middle ear cavity)

18
Q

Groove for pharyngotympanic (auditory) tube

A

A. Cartilaginous portion of auditory (Eustachian) tube (post./med. to foramen ovale)

19
Q

Stylomastoid foramen

A

A. CN VII (facial nerve)

20
Q

Facial canal (opens into stylomastoid foramen)

A

A. CN VII (facial nerve)

21
Q

Petrotympanic fissure

A

A. Chorda tympani nerve (from CN VII)

B. Anterior tympanic artery & vein

22
Q

Hiatus for greater petrosal nerve

A

A. Greater petrosal nerve (from CN VII)

23
Q

Hiatus for lesser petrosal nerve

A

A. Lesser petrosal nerve (from CN IX)

24
Q

Jugular foramen

A

A. CN IX (glossopharyngeal nerve)
B. CN X (vagus nerve)
C. CN XI (accessory nerve or spinal accessory nerve)
D. Internal jugular vein (jugular bulb)

25
Q

Hypoglossal canal

A

A. CN XII (hypoglossal nerve)

26
Q

Carotid canal

A

A. Internal carotid artery

B. Sympathetic (carotid) plexus of nerves from internal carotid nerve

27
Q

Foramen lacerum

A

A. Largely filled with fibrocartilage

B. Internal carotid artery runs above it to enter cranial vault

28
Q

Pterygomaxillary fissure

A

A. Terminal branches of maxillary artery & veins

29
Q

Pterygopalatine fossa

A

A. Pterygopalatine ganglion
B. CN V2 (maxillary nerve)
C. Branches of maxillary artery & veins

30
Q

Pterygoid canal

A

A. Nerve (Vidian) of pterygoid canal
–1. Formed by union of greater petrosal & deep petrosal nerves)
B. Pterygoid branch of maxillary artery

31
Q

Pharyngeal canal

A

A. Pharyngeal nerve (from CN V2)

B. Pharyngeal branches of maxillary artery & veins

32
Q

Palatine canal

A 
A. Greater palatine nerve (from CN V2)
B. Lesser palatine nerve (from CN V2) 
C. Descending palatine artery & vein
--1. Greater palatine artery & vein
--2. Lesser palatine artery & vein
33
Q

Greater palatine foramen

A

A. Greater palatine nerve, artery & vein

34
Q

Incisive foramen

A

A. Nasopalatine nerve
B. Branches of sphenopalatine artery & vein
C. Branches of greater palatine artery & vein (anastomose with sphenopalatine branches)

35
Q

Foramen spinosum

A

A. Middle meningeal artery

B. Meningeal branch of CN V3 (mandibular nerve)

36
Q

Foramen magnum

A

A. Spinal cord & meninges
B. Ascending rootlets of CN XI (accessory nerve)
C. Vertebral arteries
D. Anterior & posterior spinal arteries

37
Q

Condyloid canal

A

A. Emissary veins from superficial veins of skull to sigmoid sinus

38
Q

Mandibular foramen

A

A. Inferior alveolar nerve, artery & vein (from CN V3)

39
Q

Mental foramen

A

A. Mental nerve (from CN V3)

Gross Section II (2 decks)

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