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The pterion is the suture between what two bones? What artery runs under it?
Sphenoparietal suture, anterior branch of the middle meningeal.
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TMJ?
Temporal mandibular joint
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Two divisions of the cranium?
Neurcranium, viscerocranium
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Bones of the neurocranium?
Frontal, Ethmoid, Sphinoid, occipital, 2x parietal, 2x temporal
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Origin of flat bones of the skull?
neural crest derived mesenchyme, intermembranous ossification.
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Bones of the cranial base?
irregular, endochondral ossification.
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Bones of the viscerocranium?
2x lacrimal, 2x nasal, 2x maxillae, 2x zygomatic, 2x platine 2x Inferior nasal chochae. 1x mandibe and vomar
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Layers of the skull?
skin-connective tissue - aponerosis - Loose CT - pericranium - Diploe parietal bones - 3 layers of matter.
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Bone layers of the calveria?
inner and outer tables, middle Diploe layers
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Contents of the Diploe?
dipole veins that drain to the cranial dural sinuses via emissary veins. Red marrow in children.
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Name of nasal cavity?
piriform
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Nasal septum?
vomit and ethmoid bone.
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Superior and middle chonchae are part of what bone?
Ethmoid bone.
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Meninges?
Membranes that cover the CNS
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Foramen of the face?
- 1) Supa orbital - supraorbital nerve and artery.
- 2) Zygomaticofascial - zygomaticofascial nerve
- 3) Infraorbital foramen - infraorbital foramen - infraorbital nerve and artery
- 4) Mental foramen - Mental nerve and artery
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Holes in eye socket?
- 1) optical canal
- 2) superior and inferior orbital fissures
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5 regions of the temporal bone?
squamous, mastoid process, external auditory meatus, styloid process, zygomatic process
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Crainiosynostosis?
Premature closure of cranial sutures.
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Sutures of the skull?
- -coronal
- -spenoparietal
- - squamous
- - parietomastoid
- - Lambdoid
- - occipitomastoid
- - sagittal
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Superior and inferior temporal lines?
parietal bones
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Superior and inferior nuchal lines?
occipital bone
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Landmarks?
- -pterion
- -Bregma - coronal and sagital sutures
- - Lambda
- - Nasion - frontal and nasal bone intersection
- - Vertex
- - Glabella
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Middle meningeal is a branch of what artery?
Maxillary
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Sella Turcica is in what cranial fossa?
Middle
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Parts of sphenoid bone?
- - lesser wing
- - greater wing
- - body
- - dorsum sella- connection to occipital bone
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Posterior fossa contains what 2 foramen?
Magnum and jugular
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Contents of optic canal?
- -Optic nerve (CN II)
- - Opthalmic Artery
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Contents of superior orbital fissure?
- - Oclumoter nerve (CN III)
- -Trochlear (CNIV)
- -Opthalmic nerve (CN V1)
- - Abducent Nerve (CNVI)
- - Superior opthalmic vein
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Foramen Rotundum contents?
Maxillary Nerve (CN V2)
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Foramen ovale contents
- - mandibular nerve (CN V3)
- - Accessory mengeal artery
- - Lesser petrosal nerve
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Foramen Spinosum?
- - Middle menial artery and vein
- - meningeal branch of mandibular nerve
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Carotid canal contents?
internal carotid artery and internal carotid nerve plexus
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Foramen lacerum?
Filled with cartilage and petrosal nerve transverses.
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Internal acoustic meatus
- -Fascial nerve (CN VII)
- - Vestibulocochlear (CN VIII)
- - Labyrinthine Artery
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Jugular Foramen?
- - Inferior petrosal sinus
- -Glossopharyngeal nerve (CN IX)
- - Vegus (CN X)
- - Accessory Nerve (CN XI)
- - Sigmoid sinus
- - Posterior meningeal artery
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Hypoglossal Canal Contents?
Hypoglossal Nerve (CN XII)
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What are fontanelles?
- Membranes between bones of the skull not yet ossified
- - Anterior, Posterior, Anterior Lateral, Posterior Lateral
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Metopic Suture?
- Between frontal bones at birth
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Branches of trigeminal nerve?
- 1) Opthalmic
- 2) Maxillary
- 3) Mandublar
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