Cranial nerves functions Flashcards
1
Q
CNIII
A
Oculomotor nerve Motor to eye and eyelids Constriction of pupils Lesion: - ptosis - pupil dilation - eyes pointing "down and out"
2
Q
CNVIII
A
Vestibulocochlear nerve Balance Hearing Equilibrium Lesion: - unilateral progressive deafness - tinnitus
3
Q
CNI
A
Olfactory nerve
Sense of smell
Lesion:
- anosmia
4
Q
CNXII
A
Hypoglossal nerve Motor to tongue Lesion: - Deviation of tongue to affected side - Speech disturbance
5
Q
CNVII
A
Facial nerve Muscles of expression Anterior 2/3 tongue - taste (not motor) Somatosensory from ear Lesion: - paralysis of facial muscles (contralateral to nerve in muscles under eye) - strange taste in ant. 2/3 - Dry conjunctivae
6
Q
CNII
A
Optic nerve
Sight
Lesion:
- Blindness
7
Q
CNVI
A
Abducens nerve
Lateral eye movement
Lesion:
- No lateral eye movement
8
Q
CNX
A
Vagus Nerve
Sensory, motor, autonomic functions of viscera
Lesion:
- Vocal cord parylsis
- Soft palate and uvula deviation (to normal side)
9
Q
CNIX
A
Glossopharyngeal nerve Taste posterior 1/3 tongue Somatosensory - tongue, tonsils and pharynx Motor for swallowing Lesion: - Lost of taste post 1/3 - Loss of sensation of soft palate
10
Q
CNIV
A
Trochlear Nerve
Motor to eye
Lesion:
- Cannot look down when eye is adducted
11
Q
CNXI
A
Accessory nerve
Trapezius and SCM motor
Lesion:
- Paralysis of traps and SCM
12
Q
CNV
A
Trigeminal nerve Muscles of mastication Sensory around jaw Lesion: - Loss of muscles of mastication - Loss of sensation to face
