What enters & exits cranial cavities
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Foramen ovale | Mandibular branch (V3) or trigeminal (CN5)
Lesser superficial petrosal nerve (CN9)
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| Foramen spinosum | Middle menigial artery
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| Pterygomaxillary fissure | Descending palatine a.
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| Pterygopalatine fossa | Descending palatine a.
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| Sphenopalatine foramen | Sphenopalatine a.
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| Foramen rotundum | Maxillary branch (V2) of trigeminal (CN5)
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| Sella turnica | Fossa for pituitary gland
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| Stylodmastoid foramen | Facial n. (CN7)
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| Jugular foramen (7) | Inferior petrosal sinus
Sigmoid sinus
Jugular bulb
Internal jugular vein
Glossopharyngeal, vagus, accessory nn. (CN9,10,11)
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| Carotid canal | Internal carotid artery and plexus
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| Petrotympanic fissure | Auriculotemporal n. (branch of maxillary (V3) of trigeminal (CN5)
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| Musculotubal canal | Eustatian tube
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| Internal auditory meatus (3) | Facial n. (CN7)
Auditory n. (CN8)
Labyrinthine a.
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| Cribiform plate | Olfactory n. (CN1)
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| Foramen magnum (4) | Border between spine & brain stem
Spinal cord
Cervical part of CN11
Vertebral a.
Vertebral venous plexus
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| Condylar canals | Emissary vein from sigmoid sinus to vertebral veins in neck
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| Hypoglossal canal | Hypoglossal n. (CN12)
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| Foramen lacerum | Carotid artery crosses close by, usually filled with cartilage in situ
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| Supraorbital foramen | Supraorbital n. & a.
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| Optic canal (2) | Optic n.
Opthamilic artery
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| Superior orbital fissure (5) | Opthalmic v. (superior)
Oculomotor n. (CN3)
Trochlear n. (CN4)
Ophthalmic n. (CN5-1)
Abducens n. (CN6)
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| Inferior orbital fissure | Inferior opthalmic vv.
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| Infraorbital foramen/canal | Infraorbital n.
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| Mandibular foramen | Enterance: Inferior alveolar n. (CN5)
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| Mental foramen | Exit: Mental n.
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| Greater & lesser foramina | Greater & lesser palatine arteries
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| Incisive foramen | Anastamosis between posterior septal branch of sphenopalatine artery & greater palatine a.
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| Zygomaticotemporal foramen | Maxillary artery lies deep to these
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Created by:
Rungladwin
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