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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.

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cranial nerves

CRANIAL NERVES

III, V, VII, IX, X

parasympathetic cranial nerves
Parasympathetic Cranial Nerves
  • Oculomotor (III)
  • Facial (VII)
  • Glossopharyngeal (IX)
  • Vagus (X)
oculomotor nerve
Oculomotor Nerve
  • Modalities:

GSM:

From:

Oculomotor complex.

To:

4 of 6 extrinsic muscles of the eye.

Levator palpebrae superioris.

oculomotor nerve1
Oculomotor Nerve
  • Modalities:

GVM:

Preganglionics:

From:

Edinger-Westphal nucleus.

To:

Ciliary ganglion.

Postganglionics:

To:

Sphincter pupillae.

trigeminal nerve
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 nerve1
Trigeminal Nerve
  • Not parasympathetic.
  • Modalities:

SVM:

From:

Masticator nucleus.

To:

Muscles of mastication.

Tensor veli palatini.

Tensor tympani.

Mylohyoid.

Anterior belly of digastric.

trigeminal nerve2
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
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 nerve1
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 nerve2
Facial Nerve
  • Modalities:

GVM:

Preganglionics:

From:

Superior salivatory and lacrimal nuclei.

To:

Submandibular/sublingual ganglia.

facial nerve3
Facial Nerve
  • Modalities:

GVM:

Postganglionics:

To:

Lacrimal gland.

Submandibular gland.

Sublingual gland.

Mucous glands of mouth and nose.

facial nerve4
Facial Nerve
  • Modalities:

GSS:

Cell bodies of sensory neurons in geniculate ganglion.

Supplies sensory to part of external ear.

facial nerve5
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
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 nerve1
Glossopharyngeal Nerve
  • Modalities:

SVM:

From:

Nucleus ambiguous.

To:

Stylopharyngeus.

glossopharyngeal nerve2
Glossopharyngeal Nerve
  • Modalities:

GVS:

From:

Carotid body.

Carotid sinus.

glossopharyngeal nerve3
Glossopharyngeal Nerve
  • Modalities:

GVM:

Preganglionics:

From:

Inferior salivatory nucleus.

To:

Otic ganglion.

Postganglionics:

To:

Parotid gland.

glossopharyngeal nerve4
Glossopharyngeal Nerve
  • Modalities:

GSS:

From:

Posterior 1/3 of tongue.

External ear.

Middle ear cavity.

glossopharyngeal nerve5
Glossopharyngeal Nerve
  • Modalities:

SVS:

From:

Posterior 1/3 of tongue (taste).

vagus nerve
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 nerve1
Vagus Nerve
  • Modalities:

SVM:

From:

Nucleus ambiguous.

To:

Almost all muscles of pharynx and larynx.

vagus nerve2
Vagus Nerve
  • Modalities:

GVS:

From:

Larynx and pharynx.

Thoracic and abdominal viscera.

GSS:

From external ear and pharynx.

vagus nerve3
Vagus Nerve
  • Modalities:

GVM:

Preganglionics:

From:

Dorsal motor nucleus.

To:

Myenteric plexus of wall of gut tube.

vagus nerve4
Vagus Nerve
  • Modalities:

GVM:

Postganglionics:

Smooth muscle of pharynx and larynx.

Smooth muscle of most of wall of gut tube.

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