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| How many pair of cranial are there |
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| 12 - numbered by roman numerals |
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I - Olfactory
Enters/leaves brain
To/from in periphery
Foramina |
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Definition
Enters: Olfactory Bulbs
From: Olfactory epithelium
Foramina: Cribriform plate of ethoid |
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II Optic
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Thalamus
From: retina
Foramina: Optic canal |
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III Oculomotor
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Midbrain
To: Extrinsic eye muscles Sphincter pupillae, ciliary muscles
Foramina: Superior orbital fissure |
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IV Trochlear
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Midbrain
To: Extrinsic eye muscle
Foramina: Superior orbital fissure |
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V Trigeminal
V1=ophthalmic branch
V2=maxillary branch
V3=mandibular branch |
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Enters: Pons
From: V1 - From eye, scalp, forhead
From: V2 - From face, cheeks, upper teeth
From: V3 - From chin, lowe teeth, tongue
To muscle of mastication
Foramina:
V1-Superior orbital fissure
V2 Foramen rotundum
V3 Foramen Ovale |
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VI Abducens
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Pons
To: Extrinsic eye muscle
Foramina: Superior orbital fissure |
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VII Facial
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Pons
To: Muscles of facial expression
Taste from tongue
To: Lacrimal and salivary glands
Foramina: Internal acoustic meatus-to-stylomastoid foramen |
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VIII Vestibulocochlear
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Medulla
To: From inner ear
Foramina: Internal acoustic meatus |
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IX glossopharyngeal
Enters/leaves brain
To/from in periphery
Foramina |
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Definition
Enters: Medulla
To: taste and sensation from tongue
From: carotid bodies
To: stylophayngeus muscle and parotid salivary gland
Foramina: Jugular Foramen |
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X Vagus
Enters/leaves brain
To/from in periphery
Foramina |
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Enters: Medulla
To: Sensory from viscera, ear, pharynx
To: pharyngeal and laryngeal muscles
To: Sooothe muscle of viscera
Foramina: Jugular Foramen |
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XI Accessory
Enters/leaves brain
To/from in periphery
Foramina |
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Enters Medulla
To: Pharynex, Trapezius, and sternocleidomastoid
Foramina: Foramen magnum-to-Jugular foramen |
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XII Hypoglossal
Enters/leaves brain
To/from in periphery
Foramina |
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Definition
Enters: Medulla
To: tongue muscles
Foramina: Hypoglossal canal |
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| Corneal, Tympanic, Auditory, Vestibulo-ocular |
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| Direct light, consensual light |
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| The smallest pair of cranial nerves that arise from the midbrain and carry motor impulses to the superior oblique muscles of the eye are the ____________nerves |
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