CRANIAL NERVESCRANIAL NERVES

III, V, VII, IX, XIII, V, VII, IX, X

Parasympathetic Cranial NervesParasympathetic Cranial NervesOculomotor (III)Oculomotor (III)Facial (VII)Facial (VII)Glossopharyngeal (IX)Glossopharyngeal (IX)Vagus (X)Vagus (X)

Oculomotor NerveOculomotor NerveModalities:Modalities:

GSM:GSM:From:From:

Oculomotor complex.Oculomotor complex.To:To:

4 of 6 extrinsic muscles of the eye.4 of 6 extrinsic muscles of the eye.Levator palpebrae superioris.Levator palpebrae superioris.

Oculomotor NerveOculomotor Nerve Modalities:Modalities:

GVM:GVM:Preganglionics:Preganglionics:From:From:

Edinger-Westphal nucleus.Edinger-Westphal nucleus.To:To:

Ciliary ganglion.Ciliary ganglion.Postganglionics:Postganglionics:To:To:

Sphincter pupillae.Sphincter pupillae.

Trigeminal NerveTrigeminal Nerve Three branches:Three branches:

Ophthalmic.Ophthalmic.Maxillary.Maxillary.Mandibular.Mandibular.

Major sensory nerve to face.Major sensory nerve to face.(Also supplies tongue, but this is general sensory, (Also supplies tongue, but this is general sensory, not special sensory for taste.)not special sensory for taste.)

Motor to muscles of mastication:Motor to muscles of mastication:Muscles derived from first pharyngeal arch Muscles derived from first pharyngeal arch

(mandibular arch).(mandibular arch).

Trigeminal NerveTrigeminal Nerve Not parasympathetic.Not parasympathetic. Modalities:Modalities:

SVM:SVM:From:From:

Masticator nucleus.Masticator nucleus.To:To:

Muscles of mastication.Muscles of mastication.Tensor veli palatini.Tensor veli palatini.Tensor tympani.Tensor tympani.Mylohyoid.Mylohyoid.Anterior belly of digastric.Anterior belly of digastric.

Trigeminal NerveTrigeminal Nerve Modalities:Modalities:

GSS:GSS:Cell bodies of sensory neurons in trigeminal Cell bodies of sensory neurons in trigeminal (semilunar) (semilunar) ganglion.ganglion.Sensory to:Sensory to:Face and anterior scalp.Face and anterior scalp.Conjunctiva and eyeball.Conjunctiva and eyeball.Paranasal sinuses.Paranasal sinuses.Nasal and oral cavities.Nasal and oral cavities.Anterior 2/3 of tongue.Anterior 2/3 of tongue.External surface of ear drum.External surface of ear drum.Dura of middle and anterior cranial fossae.Dura of middle and anterior cranial fossae.

Facial NerveFacial NervePrimary motor nerve to muscles of facial Primary motor nerve to muscles of facial

expression.expression.Supplies muscles derived from second Supplies muscles derived from second

pharyngeal arch (hyoid arch).pharyngeal arch (hyoid arch).Branches:Branches:Temporal.Temporal.Zygomatic.Zygomatic.Buccal.Buccal.Mandibular.Mandibular.Cervical.Cervical.

Facial NerveFacial NerveCarries taste from anterior 2/3 of tongue.Carries taste from anterior 2/3 of tongue.Carries motor to submandibular and Carries motor to submandibular and

sublingual salivary glands.sublingual salivary glands.Carries motor to lacrimal gland and Carries motor to lacrimal gland and

mucous glands in nose.mucous glands in nose.

Facial NerveFacial NerveModalities:Modalities:

GVM:GVM:Preganglionics:Preganglionics:

From:From:Superior salivatory and Superior salivatory and

lacrimal lacrimal nuclei.nuclei.To:To:

Submandibular/sublingual Submandibular/sublingual ganglia.ganglia.

Facial NerveFacial NerveModalities:Modalities:

GVM:GVM:Postganglionics:Postganglionics:

To:To:Lacrimal gland.Lacrimal gland.Submandibular gland.Submandibular gland.Sublingual gland.Sublingual gland.Mucous glands of mouth and Mucous glands of mouth and nose.nose.

Facial NerveFacial NerveModalities:Modalities:

GSS:GSS:Cell bodies of sensory neurons in Cell bodies of sensory neurons in

geniculate geniculate ganglion.ganglion.Supplies sensory to part of external ear.Supplies sensory to part of external ear.

Facial NerveFacial NerveModalities:Modalities:

SVS:SVS:Cell bodies of sensory neurons in Cell bodies of sensory neurons in

geniculate geniculate ganglion.ganglion.Carries taste from anterior 2/3 of tongue.Carries taste from anterior 2/3 of tongue.Carries taste from hard and soft palates.Carries taste from hard and soft palates.

Glossopharyngeal NerveGlossopharyngeal Nerve Motor to parotid gland.Motor to parotid gland. Carries taste from posterior 1/3 of tongue.Carries taste from posterior 1/3 of tongue. Supplies general sensation to posterior 1/3 of Supplies general sensation to posterior 1/3 of

tongue.tongue. Supplies muscles derived from third pharyngeal Supplies muscles derived from third pharyngeal

arch.arch.

Glossopharyngeal NerveGlossopharyngeal NerveModalities:Modalities:

SVM:SVM:From:From:

Nucleus ambiguous.Nucleus ambiguous.To:To:

Stylopharyngeus.Stylopharyngeus.

Glossopharyngeal NerveGlossopharyngeal NerveModalities:Modalities:

GVS:GVS:From:From:

Carotid body.Carotid body.Carotid sinus.Carotid sinus.

Glossopharyngeal NerveGlossopharyngeal NerveModalities:Modalities:

GVM:GVM:Preganglionics:Preganglionics:

From:From:

Inferior salivatory nucleus.Inferior salivatory nucleus.To:To:

Otic ganglion.Otic ganglion.Postganglionics:Postganglionics:

To:To:

Parotid gland.Parotid gland.

Glossopharyngeal NerveGlossopharyngeal NerveModalities:Modalities:

GSS:GSS:From:From:

Posterior 1/3 of tongue.Posterior 1/3 of tongue.External ear.External ear.Middle ear cavity.Middle ear cavity.

Glossopharyngeal NerveGlossopharyngeal NerveModalities:Modalities:

SVS:SVS:From:From:

Posterior 1/3 of tongue (taste).Posterior 1/3 of tongue (taste).

Vagus NerveVagus NerveMotor to muscles of larynx:Motor to muscles of larynx:

Muscles of fourth and fifth pharyngeal Muscles of fourth and fifth pharyngeal arches.arches.

Important in swallowing and speaking.Important in swallowing and speaking.Major parasympathetic nerve to thoracic Major parasympathetic nerve to thoracic

and abdominal organs:and abdominal organs:Parasympathetic supply distally to left colic Parasympathetic supply distally to left colic (splenic) flexure.(splenic) flexure.

Vagus NerveVagus NerveModalities:Modalities:

SVM:SVM:From:From:

Nucleus ambiguous.Nucleus ambiguous.To:To:

Almost all muscles of pharynx and Almost all muscles of pharynx and larynx.larynx.

Vagus NerveVagus NerveModalities:Modalities:

GVS:GVS:From:From:

Larynx and pharynx.Larynx and pharynx.Thoracic and abdominal viscera.Thoracic and abdominal viscera.

GSS:GSS:From external ear and pharynx.From external ear and pharynx.

Vagus NerveVagus NerveModalities:Modalities:

GVM:GVM:Preganglionics:Preganglionics:

From:From:Dorsal motor nucleus.Dorsal motor nucleus.

To:To:Myenteric plexus of wall of Myenteric plexus of wall of

gut gut tube.tube.

Vagus NerveVagus NerveModalities:Modalities:

GVM:GVM:Postganglionics:Postganglionics:

Smooth muscle of pharynx and Smooth muscle of pharynx and larynx.larynx.

Smooth muscle of most of wall of Smooth muscle of most of wall of gut gut tube.tube.