CRANIAL NERVESCRANIAL NERVES

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

Parasympathetic Cranial NervesParasympathetic Cranial Nerves

Oculomotor (III)Oculomotor (III) Facial (VII)Facial (VII) Glossopharyngeal (IX)Glossopharyngeal (IX) Vagus (X)Vagus (X)

Oculomotor NerveOculomotor Nerve

Modalities: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) ganglion.(semilunar) 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 Nerve

Primary 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 Nerve

Carries 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 Nerve

Modalities:Modalities:GVM:GVM:

Preganglionics:Preganglionics:

From:From:

Superior salivatory and lacrimal Superior salivatory and lacrimal nuclei.nuclei.

To:To:

Submandibular/sublingual Submandibular/sublingual ganglia.ganglia.

Facial NerveFacial Nerve

Modalities: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 Nerve

Modalities:Modalities:GSS:GSS:

Cell bodies of sensory neurons in geniculate Cell bodies of sensory neurons in geniculate ganglion.ganglion.

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

Facial NerveFacial Nerve

Modalities:Modalities:SVS:SVS:

Cell bodies of sensory neurons in geniculate Cell bodies of sensory neurons in 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 Nerve

Modalities:Modalities:SVM:SVM:

From:From:

Nucleus ambiguous.Nucleus ambiguous.

To:To:

Stylopharyngeus.Stylopharyngeus.

Glossopharyngeal NerveGlossopharyngeal Nerve

Modalities:Modalities:GVS:GVS:

From:From:

Carotid body.Carotid body.

Carotid sinus.Carotid sinus.

Glossopharyngeal NerveGlossopharyngeal Nerve

Modalities: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 Nerve

Modalities: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 Nerve

Modalities:Modalities:SVS:SVS:

From:From:

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

Vagus NerveVagus Nerve

Motor 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 Nerve

Modalities: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 Nerve

Modalities: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 Nerve

Modalities:Modalities:GVM:GVM:

Preganglionics:Preganglionics:

From:From:

Dorsal motor nucleus.Dorsal motor nucleus.

To:To:

Myenteric plexus of wall of gut Myenteric plexus of wall of gut tube.tube.

Vagus NerveVagus Nerve

Modalities:Modalities:GVM:GVM:

Postganglionics:Postganglionics:

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

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