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
What nerves are entirely sensory
I olfactory
II optic
VIII vesribulocochlear
Which nerves are entirely motor
III oculomotor IV trochlear VI abducens XI accessory XII hypoglossal
Which nerves are mixed nerves
V trigeminal
VII facial
IX glossopharyngeal
X vagus
Which nerves are parasympathetic
III oculomoter
VII Facial
IX glossopharyngeal
X Vagus
Which nerves contain taste fibers
VII Facial
IX glossopharyngeal
X Vagus
Olfactory nerve components
Sensory
Function of olfactory nerve
Olfaction (smell)
What opening does the olfactory nerve come through?
Openings of the cribiform plate of the ethmoid bone
Optic nerve components
Sensory
Function of the optic nerve
Vision
Opening of the skull for the optic nerve
Optic canal
Oculomotor nerve components
Motor
Parasympathetic
Motor function of oculomotor nerve
Superior, inferior, medial rectus muscles, their inferior oblique muscle, the levator palpebrae superioris muscle
Parasympathetic function of oculomotor nerve
Innervation to constrict pupil and accommodate eye
Opening in the skull for the oculomotor nerve
Superior orbital fissure
What nerve goes through the cavernous sinus?
The oculomotor nerve
Components of the trochlear nerve
Motor
Motor function of the trochlear nerve
To the superior oblique muscle that turns the eye downward and laterally
Opening in the skull for the trochlear nerve
Superior orbital fissure
Trigeminal components
Sensory and motor
Sensory function of trigeminal nerve
To most of head
Motor function of trigeminal nerve
To muscles of mastication and few other muscles
Branches of the trigeminal nerve
- ophthalmic division
- maxillary division
- mandibular division
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
