Transcript CRANIAL NERVES - University of Kansas Medical Center

CRANIAL NERVES
III, V, VII, IX, X
Parasympathetic Cranial Nerves
Oculomotor (III)
 Facial (VII)
 Glossopharyngeal (IX)
 Vagus (X)

Oculomotor Nerve

Modalities:
GSM:
From:
Oculomotor complex.
To:
4 of 6 extrinsic muscles of the eye.
Levator palpebrae superioris.
Oculomotor Nerve

Modalities:
GVM:
Preganglionics:
From:
Edinger-Westphal nucleus.
To:
Ciliary ganglion.
Postganglionics:
To:
Sphincter pupillae.
Trigeminal Nerve

Three branches:
Ophthalmic.
Maxillary.
Mandibular.

Major sensory nerve to face.
(Also supplies tongue, but this is general sensory,
not special sensory for taste.)

Motor to muscles of mastication:
Muscles derived from first pharyngeal arch
(mandibular arch).
Trigeminal Nerve


Not parasympathetic.
Modalities:
SVM:
From:
Masticator nucleus.
To:
Muscles of mastication.
Tensor veli palatini.
Tensor tympani.
Mylohyoid.
Anterior belly of digastric.
Trigeminal Nerve

Modalities:
GSS:
Cell bodies of sensory neurons in trigeminal
(semilunar) ganglion.
Sensory to:
Face and anterior scalp.
Conjunctiva and eyeball.
Paranasal sinuses.
Nasal and oral cavities.
Anterior 2/3 of tongue.
External surface of ear drum.
Dura of middle and anterior cranial fossae.
Facial Nerve

Primary motor nerve to muscles of facial
expression.
Supplies muscles derived from second
pharyngeal arch (hyoid arch).
Branches:
Temporal.
Zygomatic.
Buccal.
Mandibular.
Cervical.
Facial Nerve
Carries taste from anterior 2/3 of tongue.
 Carries motor to submandibular and
sublingual salivary glands.
 Carries motor to lacrimal gland and
mucous glands in nose.

Facial Nerve

Modalities:
GVM:
Preganglionics:
From:
Superior salivatory and lacrimal
nuclei.
To:
Submandibular/sublingual
ganglia.
Facial Nerve

Modalities:
GVM:
Postganglionics:
To:
Lacrimal gland.
Submandibular gland.
Sublingual gland.
Mucous glands of mouth and
nose.
Facial Nerve

Modalities:
GSS:
Cell bodies of sensory neurons in geniculate
ganglion.
Supplies sensory to part of external ear.
Facial Nerve

Modalities:
SVS:
Cell bodies of sensory neurons in geniculate
ganglion.
Carries taste from anterior 2/3 of tongue.
Carries taste from hard and soft palates.
Glossopharyngeal Nerve




Motor to parotid gland.
Carries taste from posterior 1/3 of tongue.
Supplies general sensation to posterior 1/3 of
tongue.
Supplies muscles derived from third pharyngeal
arch.
Glossopharyngeal Nerve

Modalities:
SVM:
From:
Nucleus ambiguous.
To:
Stylopharyngeus.
Glossopharyngeal Nerve

Modalities:
GVS:
From:
Carotid body.
Carotid sinus.
Glossopharyngeal Nerve

Modalities:
GVM:
Preganglionics:
From:
Inferior salivatory nucleus.
To:
Otic ganglion.
Postganglionics:
To:
Parotid gland.
Glossopharyngeal Nerve

Modalities:
GSS:
From:
Posterior 1/3 of tongue.
External ear.
Middle ear cavity.
Glossopharyngeal Nerve

Modalities:
SVS:
From:
Posterior 1/3 of tongue (taste).
Vagus Nerve

Motor to muscles of larynx:
Muscles of fourth and fifth pharyngeal
arches.
Important in swallowing and speaking.

Major parasympathetic nerve to thoracic
and abdominal organs:
Parasympathetic supply distally to left colic
(splenic) flexure.
Vagus Nerve

Modalities:
SVM:
From:
Nucleus ambiguous.
To:
Almost all muscles of pharynx and
larynx.
Vagus Nerve

Modalities:
GVS:
From:
Larynx and pharynx.
Thoracic and abdominal viscera.
GSS:
From external ear and pharynx.
Vagus Nerve

Modalities:
GVM:
Preganglionics:
From:
Dorsal motor nucleus.
To:
Myenteric plexus of wall of gut
tube.
Vagus Nerve

Modalities:
GVM:
Postganglionics:
Smooth muscle of pharynx and larynx.
Smooth muscle of most of wall of gut
tube.