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Chapter 9
Cranial Nerve
| Question | Answer |
|---|---|
| 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
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