Docstoc

CRANIAL Nerve

Document Sample
CRANIAL Nerve Powered By Docstoc
					Cranial Nerves
Sense of smell Reflex salivation Increases Gastric Motility Retina – primary sight reception

I II III IV

Olfactory Optic Oculomotor

Cribiform Plate Optic Canal Superior Orbital Fissure Sup. Orbital Fissure V1: Superior Orbital Fissure

Nasal Mucosa Retinal Ganglion Midbrain (CNIII Nucleus) Midbrain (E-W Nucleus) Midbrain

SVA SSA GSE

Motor – Extra-ocular muscles of the eye Rotates Globe Intra-ocular muscles (focus – near / far) GVE-P Narrows the pupil (via ciliary ganglion)

Trochlear

GSE

Motor – Superior Oblique (extra-ocular eye m.) Trochlear – “pulley” Portion of Scalp Face Cornea Epithelium of the nasal cavity Paranasal Sinuses / Oral Cavity Skin of the Outer Ear Cranial Dura Mater Proprioreception to ALL skeletal muscles of the head. Branchiometric Skeletal Muscles (1st Arch) Muscles of Mastication Mylohyoid Digastric muscle (anterior belly) Tensor Veli Palatini muscle Tensor Tympani muscle Motor: Lateral Rectus (extra-ocular eye m.) Abducts eye – turns eye laterally. Branchiomeric Skeletal m. (Arch 2) Facial Expression: Stylohyoid Digastric Muscle (posterior belly) Stapedius

Trigeminal

Trigeminal Ganglion

GSA

V

GVE-P nerve fibers of CN VII & IX course along CN V. to innervate glands of head – mucous & salivary

V2: Foramen Rotundum
Pons (Motor Nucleus CNV)

V3: Foramen Ovale Sup. Orbital Fissure

SVE

VI

Abducens

Pons (Motor Nucleus CNVI)

GSE

Pons (Motor Nucleus CNVII)

SVE

VII

Facial

Internal Auditory Canal

Geniculate Ganglion

GSA Sensory – External Ear SVA Taste – Anterior 2/3 of Tongue (Chorda Tympani) GVA Pharynx (Uppermost Portion)
via Greater Petrosal Nerve & Pterygopalatine Ganglion Lacrimal Gland Nasal Mucous Glands Platal Mucous Glands Oral Mucous Glands GVE-P Pharyngeal Mucous Glands via Chorda Tympani & Submandibular Ganglion Sublingual Salivary Glands Submandibular Salivary Glands Sense of Hearing (organ of Corti) Sense of Equilibrium Semicircular Canals Utricle Macula of Internal ear Motor – modifies auditory input

Pons (Superior Salivary Nucleus)

VIII

Auditory

Internal Auditory Canal

Vestibular Ganglion

SSA
Spiral Ganglion

SSE James Lamberg

Page 1 of 3

Cranial Nerves
Branchiometric Skeletal Muscles (Arch 3) Stylopharyngeus

Medulla (Nuc. Ambiguous) Sup. Ganglion

SVE

GSA Skin of External Ear SVA Taste – Posterior 1/3 of Tongue

IX Glossopharyngeal

Jugular Foramen

Epithelium of Endodermal Origin: Pharynx (base of skull to esophagus) Middle ear Inferior Ganglion Internal Surface of Tympanic Membrane GVA Posterior 1/3 of Tongue Parotid gland Carotid Sinus Lesser Petrosal Nerve + Otic Ganglion Medulla (Inf. GVE-P Salivary Nuc.) Parotid Salivary Gland Branchiometric Skeletal Muscles (Arch 4 & 6) Pharynx Muscles Superior / Middle / Inferior Constrictor m. Levator Veli Palatini Salpingopharyngeus Palatoglossus Palatopharyngeus Larynx Muscles Posterior / Lateral Cricoarytenoid Transverse / Oblique Artyenoid Thyroartyenoid Cricothyroid Esophagus (Upper Portion) Skin of the External Ear External Auditory Meatus Tympanic Membrane (External Surface) Dura Mater of Posterior Cranial Fossa Taste - Lingual Surface of Epiglottis

Medulla (Nucleus Ambiguous)

SVE

X

Vagus

Jugular Foramen

Superior Ganglion

GSA SVA

Epithelium of Endodermal Origin Root of Tongue Larynx Inferior Ganglion Lining of Respiratory System GVA Heart Entire Gut Tube (to distal 1/3 of Transv. Colon) Capsule of other visceral organs (liver, kidney, Spleen) Gonads Smooth Muscle Gut Tube Medulla (Dorsal GVE-P Nucleus) Respiratory System Cardiac Muscle

XI XII

Accessory

Jugular Foramen

Cervical Spinal Cord

GSE

Motor: Sternocleidomastoid Muscle Motor: Trapezius Muscle Motor: Tongue Styloglossus Genioglossus Hyoglossus Intrinsic Muscles

Hypoglossal

Hypoglossal Canal

Medulla (Nucleus CNXII)

GSE

James Lamberg

Page 2 of 3

Cranial Nerves

James Lamberg

Page 3 of 3


				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:637
posted:10/12/2008
language:English
pages:3