Cranial Nerves Flashcards Preview

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Flashcards in Cranial Nerves Deck (12)
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1
Q

CN II

A

Optic nerve
Sensory
Ganglion cells in retina
Optic canal

2
Q

CN VIII

A
Vestibulocochlear nerve 
Sensory: hearing and balance 
Internal acoustic meatus 
Vestibular ganglion 
Cochlear ganglion
3
Q

CN IV

A
Trochlear nerve 
Somatic motor 
Trochlear nucleus 
Superior orbital fissure 
Superior oblique muscle 
Unable to look down
4
Q

CN VI

A
Abducens nerve 
Somatic motor 
Abducens nucleus in pons 
Cavernous sinus/superior orbital fissure 
Lateral rectus muscle 
Unable to abduct eye
5
Q

CN XI

A
Spinal accessory nerve 
Somatic motor 
From upper 5 segments of spinal cord 
Foramen magnum/ jugular foramen 
Trapezius and sternoclidomastoid 
Shoulder droop
6
Q

CN XII

A
Hypoglossal nerve 
Somatic motor 
Hypoglossal nucleus of brain stem 
Hypoglossal canal 
Intrinsic and extrinsic muscles of tongue except palatoglossus 
Tongue deviates to affected side
7
Q

CN III

A

Occulomotor nerve
Somatic motor and parasympathetic
Occulomotor nucleus and edinger westfall
Superior orbital fissure
Dilated pupils, droopy eyelid, pupil down and out

8
Q

CN VII

A

Somatic motor, pregang parasympathetic, somatic sensory
Internal acoustic meatus
Facial motor nucleus, superior salivary nucleus, geniculate nucleus

9
Q

CN V

A

Trigeminal nerve
Somatic motor and somatic sensory
Trigeminal motor nucleus, trigeminal ganglion
V1: superior orbital fissure (opthalmic)
V2: foramen rotundum (maxillary)
V3: foramen ovale (mandibular)

10
Q

CN IX

A

Glossopharngeal nerve
Somatic motor: nucleus ambiguous
Pregang parasymp: inferior salivary nucleus
Somatic sensory: inferior ganglion of IX
Visceral sensory: inferior ganglion of IX
Jugular foramen

11
Q

CN X

A
Vagus nerve 
Pregang parasymp: dorsal motor nucleus 
Somatic motor: nucleus ambiguous 
Somatic sensory: superior ganglion of X 
Visceral sensory: inferior ganglion of X 
Jugular foramen
12
Q

CN I

A

Olfactory nerve
Sensory
Cribiform plate
Synapse at olfactory bulb