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Neuroanatomy
Cranial Nerves
15
Anatomy
Graduate
12/08/2009

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Cards

Term
Abducens or Oculomotor VI
Definition
A lesion to which of the following crainial nerves might result in double vision?
Term
Olfactory Nerve I
Definition
Smell Deficit ansomia--aromic substance could be painful
Term
Optic II
Definition
vision, deficit anopsia check eyes individually and in different planes. light reflex
Term
mneumonic for eye muscles
Definition
LR6 SO4 AO3
Term
Oculomotor III
Definition
all eye muscles except LR & SO. Deficits-Diplopia(double vision), external strabismus, loss of parallel gaze, Ptosis. loss of near response, dilated pupil.
Term
Trochlear IV
Definition
Superior Oblique-depresses and abducts eyeball,intorts. Deficit difficulty reading going down stairs, head may tilt away from lesioned side.
Term
Trigeminal-GSA, SVE
Definition
General sensation of forehead/scalp, cornea. Also palate, nasal cavity, maxillary face, man/max teeth, ant. 2/3 of tongue, mandibular face
Deficit- loss of sensation of these & sensory blink reflex.
Term
Trigeminal Motor
Definition
motor to muscles of mastication. Deficit-weak to chew jaw deviates toward lesioned nerve.
Term
Abducens
Definition
lateral rectus (abducts eyeball) defecit-diplopia, internal strabismus, loss of lateral gaze.
Term
Facial VII
Definition
motor to facial expression, stapedius, taste to ant. 2/3 of tongue,palate. visceal for salivation, tears, mucous secretion. deficit-opposite & blink reflex
Term
Vestibulocochlear VIII
Definition
Hearing, Linear acceleration(gravity) Angular acceleration (head turning)
Deficit-sensorineural hearing loss, vertigo
Term
Glossopharyngeal IX
Definition
MIXED--sensation of oropharynx, carotid sinus,carotid body. sensation & taste to posterior 1/3 of tongue. visceral motor for salivation(parotid) motor to sylopharyngeus. Deficit- Loss of gag reflex (w.X) disturbance of carotid sinus reflex. difficulty swallowing, loss of all others.
Term
Vagus X
Definition
all muscles of larynx..muslces of palate xcept tensor veli palatini. all muscles of pharynx xcept stylopharyngeus. sensory to laynx & laryngeopharynx, trachea, bronchi. sensory to glands & smooth muscle in thorax, foregut & midgut. Deficit Hoarseness, dysphonia, dysphagia goes up nose when drinking, loss of motor limb of gag reflex w/ IX. Palate droop, uvula points away from nerve leison.
Term
Accessory XI
Definition
SCM-turns head to opposite side, Traps (elevates & rotates scap) Deficit- shoulder droop weakness in turning head.
Term
Hypoglossal XII
Definition
all intrinsic tongue muscles and all but one extrinsic tongue muscle. Deficit-tongue deviation tow. lesioned nerve. Dysarthia (difficulty speaking)
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