Cranial Nerves (Motor and Sensory Distribution): Schema
¦Efferent (motor) fibers
¦Afferent (sensory) fibers
Olfactory Optic
IIIOculomotor
Ciliary muscle, sphincter ofpupil and all external eye
muscles except those below
IVTrochlear
Superior oblique muscle
VIAbducens-
Lateral rectusmuscle
VTrigeminal
Sensory—face
IXGlossopharyngeal
Sensory—posterior % of tongue,tonsil, pharynx, middle ear
Motor—stylopharyngeus, upperpharyngeal muscles, parotid gland
XIIHypoglossal
Tongueuscles
Strapmusclesby ansa
cervicalis
XIAccessory
Sternocleidomastoid,trapezius muscles
XVagus
Motor—heart, lungs, palate, pharynxlarynx, trachea, bronchi, CI tractSensory—heart, lungs, trachea,
bronchi, larynx, pharynx,Gl tract, external ear
PLATE 112HEAD AND NEGK
ii%*
23
17
16:
1-0
BRAIN
1.cerebral cortex2.longitudinal fissure3.gyrus4.sulcus5.cerebellum6.spinal cord7.corpus callosumS. septum peilueidum
(lateral ventricleis behkd this)
9.pineal gland10.superior colliculus11.cerebral aqueduct12.thalamus13.hypothalamus14.pituitary gland15.midbrain ^16.pons 's—-
17.medulla oblongata18.third ventricle19.optic nerve20.fourth ventricle21.olfactory bulb22.olfactory tract I23.optic chiasma n24.oculomotor n. Hi25.trigeminal n. V26.abducens n. VI27.fecial n. VU29, glossopharyngeal i
K29.vagus n. X30.hypoglossal n. XD31.spinal accessory n
XI
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