NMS 6 Flashcards
CN I
sensory: smell is tested in one nostril at a time with eyes closed
anosmia: loss sense of smell
parosmia: distorted sense of smell
CN II
sensory: vision is tested with Snellen Chart for visual acuity, visual fields (peripheral vision)
direct light reflex: CN 2 and 3
consenual light reflex: CN 2 and 3
accomodation: eyes converge, pupils constrict, lens convexity
CN III
motor: levator palpebrae, inferior oblique, superior, medial and inferior rectus
parasympathetic: ciliary muscles and constrictor pupillae
direct light reflex
indirect light reflex
accomodation
strabismus (deviation of both eyes)
ptosis (eyelids droop due to weakness or paralysis of levator palpebrae
CN IV
superior oblique muscle (down and in)
CN V
sensory: touch forehead, cheekbone, and chin with cotton wisp, corneal relfex, jaw jerk, oculocardiac reflex, general sensation of anterior 2/3 of tongue
motor: muscles of mastication (temporalis, internal pterygoid, masseter, external pterygoid)
tic douloureaux
trigeminal neuralgia
extreme, sporadic, suddne burning or shock-like face pain that lasts anywhere from a few seconds to as long as 2 minutes per episode
lightening like, excruciating pain is repetitie, occuring several times per day
pain typically felt onone side of jaw or cheek
CN VI
motor: lateral rectus muscle
CN VII
sensory: taste anterior 2/3 of tongue (sweet, salty, sour)
motor: muscles of facial expression
bell’s palsy
unilateral facial paralysis caused by trauma, virus or immune mediated response and is not permanent
intial pain behind the ipsilateral ear, twitching, weakness or paralysis, drooping eyelid, drooping corner of mouth, drooling, dry eye, impairment of taste
entire motor loss of half of face, forehead will not wrinkle, LMNL, CN7
CN VIII
sensory: vestibular-balance, mittelemeyer, barany caloric test, rhomberg’s.
cochlear- weber, rinne, whisper, auditory acutity/watch
meniere’s disease (endolymphatic hydrops)
cause is unknown, but probably results from abnormality in the fluids of the inner ear
episodic rotational vertigo, hearing loss, tinnitus
CN IX
sensory: gag, uvula, carotid reflex, taste to posterior 1/3 of tongue (bitter)
motor: stylopharyngeus muscle elevates pharynx and larynx, dilates pharynx to permit swallowing
CN X
sensory: epiglottis and laryngeal muscles of swallowing (palate, pharynx, contracting muscle)
motor: gag, carotid reflex, uvular reflex
torticollis (wry neck)
spasm of SCM muscle
uvualr reflex
palate and uvula deviate to the oppostive side of lesion when patient says ahh
CN XI
motor: trapezius and SCM: shoulder shrug with head rotation against resistance
CN XII
motor: tongue muscles- stick out tongue, deviation to side of lesion; look for atrophy and fasciculations
if there is a left optic nerve lesion, what would you see when you do light reflex?
when you shine it in the left eye, the light reflex is absent
when you shine it in the right eye, the light reflex is present
if there is a left oculomotor lesion, what would you see when you do light reflex?
when you shine it in the left eye, the light reflex is absent in the left eye, present in right eye
when you shine it in the right eye, the light reflex is present
if there is a right oculomotor lesion, what would you see when you do the light reflex?
when you shine it in the left eye, the light reflex is present in the left eye, absent in the right eye
when you shine it in the right eye, the light reflex is present
