Cranial Nerves Flashcards
Front: Number Back: Name, brain region associated with, function (functional components), clinical examination, symptoms seen after injury
1
Q
I
A
Olfactory Cerebrum Smell (SVA) Owener's observations Anosmia
2
Q
II
A
Optic
Diencephalon
Vision (SSA)
Menace response (anopsia)
3
Q
III
A
Oculomotor
Midbrain
Eye movement (SE, VE)
Horizontal eye movement, pupillary light response
Strabismus: eye deviated down and out; large pupil
4
Q
IV
A
Trochlear
Midbrain
Eye movement (dorsal oblique m: SE)
Extend head and look for dosolateral strabismus
Cat: dorsal aspect of vertical pupil deviated laterally
5
Q
V
A
Trigeminal
Pons
Masticatory movements, sensation from face (SE, GSA)
jaw movement, eye blink reflex
Bilateral damage = dropped jaw, asymmetric chewing, atrophy
6
Q
VI
A
abducens medulla Eye movement (lateral rectus, SE) Lateral eye movement double vision; strabismus: eye deviated medially
7
Q
VII
A
facial medulla facial movement, taste, rostral tongue (SE, SVA, VE) facial movement, menace response facial paralysis, drooling
8
Q
VIII
A
vestibulocochlear medulla hearing and balance (SSA) horizontal and vertical eye movement deafness, head tilt, nystagmus
9
Q
IX
A
glossopharyngeal
medulla
tongue and pharynx (GVA, VE, SVA)
phary
10
Q
X
A
Vagus Medulla Pharynx, Larynx, Heart, Viscera (SE, VE, GVA) Gag reflexes, blood pressure, heart rate hoarseness, inspiratory dyspnea
11
Q
XI
A
Spinal accessory medulla trapezius + 3 neck mm. (SE) Neck movement Weakened turning of neck
12
Q
XII
A
Hypoglossal medulla tongue mm. (SE) tongue movement deviation of tongue toward the side of lesion
