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What is the purpose of loose connective tissue in the scalp?
allows the outer three layers to move freely over the skull.
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What seperates the inner and outer tables of compact bone and is spongy bone?
dipole
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what are cranial meniges?
three membranes that surround the brain and are continous with the meniges of the spinal cord.
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Describe dura mater and its two parts.
- fused with the periosteum
- Periosteal dura: continous with the periosteum of the inner surface of the skull
Meningeal dura: continous with the dura of the spinal cord
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What is a delicate membrane that lines the innner surface of the dura? What are fine extensions that span across the subdural space and attach to the pia mater?
arachnoid mater;
Arachnoid trabeculae
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Define Pia mater
vascular delicate membrane that attaches to the brain
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what creates channels in the cranium?
The seperation of meningeal dura from periosteal dura.
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list 4 dural folds
- falx cerebri
- falx cerebelli
- tentorium cerebelli
- diaphragma sellae
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List 4 sutures:
- Coronal;
- Sagittal
- squamosal
- lambdoidal
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What structure(s) passes through the foramen lacerum?
small vascular structures
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What structure(s) passes through the formen magnum?
junction of spinal cordd and brainstem; vertebral arteries; anterior and posterior spinal arteries; meninges
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What structure(s) passes through the foramen ovale?
mandibular nerve; lesser petrosal nerve; acessory menigeal artery
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What structure(s) passes through the Foramen rotundum?
maxillary nerve
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What structure(s) passes through the foramen spinosum?
Middle meningeal artery
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What structure(s) passes through the groove for greater petrosal?
greater petrosal nerve
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What structure(s) passes through the hypoglossal canal?
hypoglossal nerve
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What structure(s) passes through the internal auditory meatus?
vestibulocochlear nerve; facial nerve
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What structure(s) passes through the jugular foramen?
Nerves IX, X, XI; internal jugular vein as formed by the sigmoid sinus and inferior petrosal sinus.
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What structure(s) passes through the olfactory forimina in cribiform plate?
olfactory nerve
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What structure(s) passes through the optic canal?
Nerve II; ophthalmic artery; sympathetic nerves from internal carotid plexus for ciliary muscle; dilator of pupul and smooth muscle of blood vessels in eye.
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What structure(s) passes through the carotid canal?
internal carotid artery and sympathetic carotid plexus
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What structure(s) passes through the greater palatine foramen?
greater palatine vessles and nerves
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What structure(s) passes through the incisive foramen and canal?
Greater palatine arteries; nasopalatine nerve
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What structure(s) passes through the lesser palatine foramina?
lesser platine vessels and nerve
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What structure(s) passes through the stylomastoid foramen?
Nerve VII
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What structure(s) passes through the superior orbital fissure?
Nerves III, IV, V, VI
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What structure(s) passes through the Supraorbital foramen?
supraorbital artery, nerve and vein
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What structure(s) passes through the infraorbital foramen?
V2, Infraorbital nerve, artery and vein
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What structure(s) passes through the mandibular canal?
Inferior alveolar artery , nerve and vein
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What structure(s) passes through the mental foramen?
mental nerve artery and vein
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List the 12 cranial nerves
- CN
- I: olfactory n.
- II: optic n.
- III: oculomotor n.
- IV: trochlear n.
- V: trigeminal (V1, V2, V3)
- VI: abducens n.
- VII: Facial n.
- VIII: vestibulocochlear n.
- IX: glossopharyngeal n.
- X: vagus
- XI: Acessory
- XII: hypoglossal
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