Cranial Nerves Flashcards by Sarah Heath

Cranial nerves in order

I-olfactory
II-optic
III-oculomoter
IV-Trohclear
V-trigeminal 
VI-abducens 
VII-facial
VIII-vestibulocochlear
IX-Glossopharyngeal
X-Vagus
XI-Accessory
XII-hypoglossal

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What nerves are entirely sensory

I olfactory
II optic
VIII vesribulocochlear

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Which nerves are entirely motor

III oculomotor 
IV trochlear
VI abducens
XI accessory 
XII hypoglossal

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Which nerves are mixed nerves

V trigeminal
VII facial
IX glossopharyngeal
X vagus

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Which nerves are parasympathetic

III oculomoter
VII Facial
IX glossopharyngeal
X Vagus

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Which nerves contain taste fibers

VII Facial
IX glossopharyngeal
X Vagus

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Olfactory nerve components

Sensory

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Function of olfactory nerve

Olfaction (smell)

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What opening does the olfactory nerve come through?

Openings of the cribiform plate of the ethmoid bone

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Optic nerve components

Sensory

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Function of the optic nerve

Vision

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Opening of the skull for the optic nerve

Optic canal

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Oculomotor nerve components

Motor

Parasympathetic

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Motor function of oculomotor nerve

Superior, inferior, medial rectus muscles, their inferior oblique muscle, the levator palpebrae superioris muscle

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Parasympathetic function of oculomotor nerve

Innervation to constrict pupil and accommodate eye

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Opening in the skull for the oculomotor nerve

Superior orbital fissure

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What nerve goes through the cavernous sinus?

The oculomotor nerve

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Components of the trochlear nerve

Motor

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Motor function of the trochlear nerve

To the superior oblique muscle that turns the eye downward and laterally

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Opening in the skull for the trochlear nerve

Superior orbital fissure

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Trigeminal components

Sensory and motor

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Sensory function of trigeminal nerve

To most of head

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Motor function of trigeminal nerve

To muscles of mastication and few other muscles

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Branches of the trigeminal nerve

ophthalmic division
maxillary division
mandibular division

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What opening does the ophthalmic division of the trigeminal nerve run through

Superior orbital fissure

What is the opening of the skull that the maxillary division of the trigeminal nerve go through

Foramen rotundum

What opening of the skull does the mandibular division of the trigeminal nerve run through

Foramen ovale

VI ophthalmic division

Sensory to cornea, skin of the forehead, scalp, eyelids, and nose; mucous membrane of the paranasal sinuses and nasal cavity

V2 maxillary division of trigeminal nerve

Sensory to skin of face over the maxilla and upper lip; teeth of upper jaw; mucous membrane of the nose; maxillary air sinus

V3 mandibular division of the trigeminal nerve (sensory)

Sensory to skin of the cheek, skin over the mandible, and side of head; teeth of lower jaw and temporomandibular joint; mucous membrane of the mouth and anterior two-thirds of the tongue

V3 mandibular division of the trigmeninal (motor)

Muscles of mastication (temporalis, masseter, medial and lateral pterygoid s), anterior belly of the digastric, mylohyoid, tensor tympani, and tensor veli palatini

Components of abducens nerve

Motor

Function of abducens nerve

Motor to the lateral rectus muscle-turns eye laterally

Which is the longest path through the cranial cavity?

Abducens, it is frequently damaged by increases intracranial pressure or by fractures to the base of the skull

Components of the facial nerve

Motor. Sensory, parasympathetic, taste

Motor function of the facial nerve

To muscles of facial expression, stapedius, stylohyoid, posterior belly of the digastric

Taste function of the facial nerve

From the anterior two/thirds of the tongue, and palate

Parasympathetic innervation of the facial nerve

Submandibular and sublingual salivary glands, lacrimal glands and glands of the nose and palate

Opening in skull for the facial nerve

Internal auditory meatus, facial canal, and stylomastoid foramen

Vestibulocochlear components

Sensory

Function of the vestibulocochlear

- vestibular nerve: positions and movement of the head | - cochlear nerve: hearing

Opening in the skull for the vestibulocochlear nerve

Internal auditory/ acoustic meatus

Components of the glossopharyngeal nerve

Motor, general sensory, taste

Motor function of the glossopharyngeal nerve

To the stylopharyngeus muscle

General sensation and taste function of the glossopharyngeal nerve

From the posterior third of the tongue

General sensation of the glossopharyngeal nerve

From pharynx

Sensory fibers for the glossopharyngeal nerve

From the carotid sinus

Parasympathetic innervation of the glossopharyngeal nerve

Of the parotid gland

Opening of the skull for the glossopharyngeal nerve

Jugular foramen

Components of the vagus nerve

Motor, parasympathetic, sensory, taste

Motor function of the vagus nerve

Innervated constrictor muscles of the pharynx and intrinsic muscles of the larynx

Parasympathetic innervation of the vagus nerve

To structure in the neck, thorax and most of abdomen to splenic flexible of colon

Taste of the vagus nerve

From the valleculae epiglottis

Afferent fibers (sensation) of the vagus nerve

From all the motor and paraympstathetic structures of the vagus nerve

Opening in the skull for the vagus nerve

Jugular foramen

Components of he accessory nerve

Motor

Function of the accessory nerve

Motor to the sternocleidomastoid and trapezius muscles

Opening in the skull for the accessory nerve

Jugular foramen

Components of the hypoglossal nerve

Motor

Motor function of the hypoglossal nerve

To the intrinsic and extrinsic muscles of the tongue (EXCEPT PALATOGLOSSUS MUSCLE)

Opening in the skull for the hypoglossal nerve

Hypoglossal canal