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Chapter 9

Cranial Nerve

What nerves control eyeball movement? Oculomotor(III), Trochlear(IV), Abducens(VI)
Smallest Cranial nerve? Trochlear (IV)
Largest Cranial Nerve? Trigeminal (V)
What muscle are innervated by III cranial nerve? Superior, Medial, Inferior rectus, inferior oblique
What muscles are innervated by IV cranial nerve? Superior Oblique
What muscles are innervated by VI cranial nerve? lateral rectus muscle
Damage of which nerve causes blindness? Optic Nerve II
What muscles are innervated by facial nerve? frontalis, occipitalis, orbicularis oris, zygomaticus major, buccinator, platysma, orbicularis oculi
What muscles are innervated by trigeminal nerve? masseter, temporalis, medial pterygoid, lateral pterygoid
The tastes buds of the anterior region of the tongue are innervated by which cranial nerve? facial nerve VII
The taste buds of the posterior region of the tongue are innervated by which cranial nerve? glossopharyngeal IX
Which cranial nerve innervates trapezius and sternocleidomastiod muscles? Accessory nerve XI
Which cranial nerve innervates muscles of pharynx? Glossopharyngeal IX
Which cranial nerve innervates visceral organs in the thorax and abdomen? Vagus nerve X
Which cranial nerve is the last cranial nerve and innervates tongue? Hypoglossal XII
What are 3 branches of cranial nerve V? V1- ophthalmic V2- maxillary V3- mandibular
A block of which nerve would provide anesthesia to the lower teeth and chin? V3 Mandibular
Which 3 nerves are sensory cranial nerves? Olfactory (I), Optic(II), Vestibulochochlear (VIII)
Which nerves pass through the superior orbital fissure? Oculomotor (III), Trochlear (IV), Trigmenial (V), Abducens (VI)
Which nerves pass through the jugular foramen? Glossopharynx (IX), Vagus (X), Accessory (XII)
Which cranial nerves pass through the internal auditory meatus? Facial (VII), Vestibulochochlear
Olfactory nerve CN1, Sensory, Exit: cribriform plate, Function: smell
Optic nerve CN2, Sensory, Exit: Optic foramen, Function: vision, Injury: blindness
Oculomotor nerve CN3, Motor, Exit: SOF, Function: move eyeball, Injury: Diplopia
Trochlear nerve CN4, Motor, Exit: SOF, Function: moves eye inferiorly & laterally
Trigeminal nerve CN5, Mixed, Function: skin, muscle, mucosa, tooth, chewing, Injury: neuralgia
Abducens nerve CN6, Motor, Exit: SOF, Function: moves eye superiorly & laterally
Facial nerve CN7, Mixed, Exit: Internal Auditory Canal, Function: 2/3 tongue, facial expression, injury: bell's palsy
Vestibulochochlear nerve CN8, Sensory, Exit:Internal Auditory Canal, Function: equilibrium & hearing
Glossopharynx nerve CN9, Mixed, Exit: Jugular Foramen, Function: 1/3 tongue, elevates pharynx, Injury: loss of tastebuds
Vagus nerve CN10, Mixed, Exit: Jugular Foramen,
Accessory nerve CN11, Motor, Exit: Jugular Foramen,
Hypoglossal nerve CN12, Motor, Exit: Hypoglossal canal Function: movement of tongue
Trigmenial Nerve 1 Exit: SOF
Trigmenial Nerve 2 Exit: Foramen rotundum
Trigmenial Nerve 3 Exit: Foramen Ovale
Created by: _melgozacaroo15