Cranial Nerves

Descrição

CNS/Cranial Nerves FlashCards sobre Cranial Nerves, criado por salu624 em 09-10-2013.
salu624
FlashCards por salu624, atualizado more than 1 year ago
salu624
Criado por salu624 aproximadamente 11 anos atrás
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Resumo de Recurso

Questão Responda
Preganglionic Parasympathetic Fibers CNIII, CNVII, CNIX, CNX CAT nerves- feed 3X a day, 7 days a week, 9 lives, on the 10th they're dead
CNIII- Preganglionic PS Function CNIII--> to ciliary ganglion -pupillary constriction -lens bulging (intraocular mm)
CNVII- preganglionic PS Function --> to pterygopalatine ganglion AND submandibular ganglion - tear production (lacrimal gland)+ mucous production with nose/palate -salivation- sublingual and submandibular glands
CNIX- preganglionic PS Function to otic gland -for salivation(parotid gland)
CNX- preganglionic PS Function to ganglion in neck, thorax, and abdomen(foregut & midgut) -MAIN parasympathetic nerve of the body
CNI Olfactory -smell- primary determinant of flavor -extended part of CNS -lesions cause anosmia
CNII Optic - vision- special sensory -extended part of CNS
CNIII Oculomotor: -4/6 extraocular eye muscles 1. superior rectus 2. medial rectus 3. inferior rectus 4. inferior oblique -1/2 upper eyelid muscles levator palpebrae superioris
CNIII Lesion -fixed dilated pupil -droopy eyelids (ptosis) -eye deviates down and out--> diploplia
CNIV Trochlear: -1/6 extraocular muscles -superior oblique muscle
CNIV Lesion -causes diploplia- double vision - eye elevated on forward gaze -tilt hear AWAY from lesion- eliminate diploplia
CNIV Abducent 1/6 extraocular muscles - lateral rectus muscle
CNVI Lesion -lateral diploplia - affected eye deviated medially- at rest - turn head to the affected side- eliminates diploplia
CNV-Sensory Trigeminal V1- forehead, eyelids, cornea, median nose, nasal cavity V2- lateral forehead, lower eyelid, lateral nose, cheeks, nasal cavity, upper lip/teeth V3- lower lip/teeth, tongue, chin, anterior ear
CNV-Motor V3-mandibular -supplies 4mm of mastication -2 suprahyoid mm 2 "tensor" mm
CNV-Lesion -causes dysthesia and jaw weakness -depends on which branches are affected -V3: jaw may deviate to side of lesion
CNVII Facial Sensory: -Taste(special)- anterior 2/3 of tongue -outer surface of tympanic membrane -skin of external ear Motor: muscles of facial expression 1. temporal 2. zygomatic 3. buccal 4. marginal mandibular 5. cervical
CNVII Lesion Paralysis of facial muscles -dry eyes and dry mouth
CNVIII Vestibulocochlear - hearing (special sensory):cochlea - balance/ proprioception (special): to semicircular canals
CNIX-Sensory Glossopharyngeal -taste: posterior 1/3 of tongue -general: post tongue, oropharynx, middle ear -visceral: carotid body and sinus
CNIX- Motor Glossopharyngeal -stylopharyngeus muscle
CNX-Sensory Vagus -Taste-epiglottis and pharynx -external auditory canal, vallecula/ post tongue Visceral- organs
CNX- Motor Vagus -supplies most muscles in the pharynx and soft palate -all intrinsic muscles in the larynx
CNX Lesion Dysphagia- difficulty swallowing Dysarthria- difficulty speaking -alters uvula movement -saying "ahh"-> moves away from lesion
CNXI Spinal Accessory -supplies to sternocleidomastoid and trapezius
CNXI Lesion causes difficulty turning head or shrugging shoulders
CNXII Hypoglossal -supplies intrinsic and extrinsic tongue muscles EXCEPT: Palatoglossus muscle
CNXII Lesion causes tongue weakness and difficulty swallowing -sticks out tongue toward lesion

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