7 Cranial Nerves III, IV, VI: Oculomotor, Trochlear, Abducens Nucleus in midbrainInnervates 4 extraocular muscles and functions in most eye movementsContains parasympathetic which innervates pupillary constrictor musclesand ciliary muscle of lens.TrochlearNucleus in midbrainNerve exits dorsal surface and crosses overMoves eye medially and downwardAbducensNucleus in ponsMoves eye laterally
8 Cranial Nerve V: Trigeminal Nerve Trigeminal ganglionOphthalmic, maxillary and mandibular divisionsSensory: Touch, pain, temp, proprioception for face, mouth,anterior 2/3 of tongue, nasal sinuses.Motor: Muscles of chewing, tensor tympani muscle
9 Cranial Nerve VII: Facial Nerve Motor function: muscles of facial expression.Parasympathetic function: innervation of lacrimal glands and some salivary gland.Visceral sensory function: taste from anterior 2/3 of tongue
10 Facial Nerve Lesions cause paralysis in face Bell’s Palsy Facial nerve is impaired and then gradually recovers.Cause unknown,(viral or inflammatory)
11 Cranial Nerve VIII: Vestibulocochlear Nerve Auditory and vestibular sensationTravels with facial nerveBranches go to cochlea, vestibule
13 Lesions in Auditory Pathway During auditory seizures: patients often report tones from the side opposite the cortical area involved in the seizure.Vertigo can be caused by damage to vestibular pathways
14 Cranial Nerve IX: Glossopharyngeal Nerve Motor function: stylopharyngeus muscle which elevates pharynx duringtalking and swallowing and participates in gag reflex.Parasympathetic function: innervation of parotid salivary gland.Visceral sensory function: taste from posterior1/3 of tongue
15 Cranial Nerve X: Vagus Nerve Motor function: pharyngeal muscles (swallowing) & laryngeal muscles (vocalization)Parasympathetic function: innervation of heart, lungs, most if digestive tract.Somatic sensation function: sensation from pharynx, meninges,external auditory meatus.