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21 Cards in this Set
- Front
- Back
What 3 foramina are in the anterior cranial fossa?
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1. Foramen cecum
2. Cribiform foramina 3. Ant/post ethmoidal foramina |
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Foramen cecum contents:
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Nasal emissary vein (1% popln)
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Cribiform foramina in cribiform plate contents:
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Axons in olfactory epithelium that form olfactory nerves
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What lies within the ant/post ethmoidal foramina?
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Vessels and nerves w/ same name.
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How many unique foramina are in the middle cranial fossa?
What is their acronym? |
7
OSROSLPG |
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What are the 7 foramina in the middle cranial fossa?
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1. Optic canals
2. Superior orbital fissure 3. Foramen rotundum 4. Foramen ovale 5. Foramen spinosum 6. Foramen lacerum 7. Groove of greater petrosal |
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Optic Canal contents
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Optic nerve (CN II)
Opthalmic artery |
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Superior orbital fissure contents
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CN III, IV, V1, VI
Opthalmic vein Sympathetic fibers |
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V1 is also called
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opthalmic nerve
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Foramen rotundum contents
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Maxillary nerve V2
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Foramen ovale contents
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Mandibular nerve V3
Accessory meningeal artery |
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Foramen spinosum contents
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Meningeal branch of V3
Middle meningeal artery/vein |
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What structures pass across foramen lacerum?
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-Internal carotid artery
-Sympathetic/venous plexuses of ICA |
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Groove of Greater Petrosal n. contents
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Greater Petrosal nerve
Petrosal branch of middle meningeal artery |
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How many foramina in posterior cranial fossa?
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5
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What are the 5 foramina in posterior cranial fossa?
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Foramen magnum
Jugular foramen Hypoglossal canal Condylar canal Mastoid foramen |
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What passes through foramen magnum? (7 things)
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-Medulla
-Meninges -Vertebral arteries -Spinal arteries (ant/post) -Dural veins -CN XI (spinal accessory) |
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What passes through Jugular foramen? (8 things)
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-CN 9, 10, 11
-Superior bulb of IJV -Inferior Petrosal Sinus -Sigmoid Sinus -Meningeal branch of the ascending pharygneal artery -Meningeal branch of the ascending Occipital artery |
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What passes through the hypoglossal canal?
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The hypoglossal nerve (CN XII)
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What passes through the condylar canal?
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An emissary vein connecting the sigmoid sinus to vertebral veins.
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What passes through the mastoid foramen?
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-mastoid emissary vein from sigmoid sinus
-meningeal branch of occipital artery |