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68C Cranial Nerves
12 Cranial Nerves
| Question | Answer |
|---|---|
| Cranial Nerve I OLFACTORY | from nose to brain - sense of smell |
| Cranial Nerve II OPTIC | from eye to brain - vision |
| Cranial Nerve III OCULOMOTOR | from brain to eye muscles - eye movements, extraoccular muscles, pupillary control( pupillary constriction) |
| Cranial Nerve IV TROCHLEAR | from brain to external eye muscles - down and inward movement of eye |
| Cranial Nerve V TRIGEMINAL Ophthalmic branch Maxiallry branch Mandibular branch | from skin and mucous membranes of head to brain; from teeth to brain; from brain to chewing muscles - sensations of face, scalp and teeth; chewing movements |
| Cranial Nerve VI ABDUCENS | from brain to external eye muscles - lateral movement of eye |
| Cranial Nerve VII FACIAL | from taste buds of tongue to brain; from brain to facial muscles - sense of taste on anterior two thirds of tongue; contraction of muscles of facial expression |
| Cranial Nerve VIII ACOUSTIC (VESTIBULOCOCHLEAR) | from ear to brain - hearing; sense of balance (equilibrium) |
| Cranial Nerve IX GLOSSOPHARYNGEAL | from throat and taste buds of tongue to brain; from brain to throat muscles and salivary glands - sensation of throat, taste, swallowing movements, gag reflex, taste posterior one third of tongue, secretion of saliva |
| Cranial Nerve X VAGUS | from throat, larynx and organs in the thoracic and abdominal cavities to brain - sensations of throat, larynx and thoracic and abdominal organs, swallowing, voice production, slowing of heartbeat, acceleration of peristalsis |
| Cranial Nerve XI SPINAL ACCESSORY | from brain to certain shoulder and neck muscles - shoulder movements(trapezius muscles) and turning movements of head (sternocleidomastoid muscles) |
| Cranial Nerve XII HYPOGLOSSAL | from brain to muscles of tongue - tongue movements |
| CN I | Olfactory |
| CN II | Optic |
| CN III | Oculomotor |
| CN IV | Trochlear |
| CN V | Trigeminal |
| CN VI | Abducens |
| CN VII | Facial |
| CN VIII | Acoustic (vestibulocochlear) |
| CN IX | Glossopharyngeal |
| CN X | Vagus |
| CN XI | Spinal Accessory |
| CN XII | Hypoglossal |
| Olfactory | CN I |
| Optic | CN II |
| Oculomotor | CN III |
| Trochlear | CN IV |
| Trigeminal | CN V |
| Abducens | CN VI |
| Facial | CN VII |
| Acoustic (vestibulocochlear) | CN VIII |
| Glossopharyngeal | CN IX |
| Vagus | CN X |
| Spinal Accessory | CN XI |
| Hypoglossal | CN XII |
| Sense of smell | Olfactory |
| Vision | Optic |
| Eye movements, extraoccular muscles, pupillary control( pupillary constriction) | Oculomotor |
| Down and inward movement of eye | Trochlear |
| Lateral movement of eye | Abducens |
| Sense of taste on anterior two thirds of tongue; contraction of muscles of facial expression | Facial |
| Hearing; sense of balance (equilibrium) | Acoustic (vestibulocochlear) |
| Sensation of throat, taste, swallowing movements, gag reflex, taste posterior one third of tongue, secretion of saliva | Glossopharyngeal |
| Sensations of throat, larynx and thoracic and abdominal organs, swallowing, voice production, slowing of heartbeat, acceleration of peristalsis | Vagus |
| Shoulder movements and turning movements of head | Spinal Accessory |
| Tongue movements | Hypoglossal |
| Sensations of face, scalp and teeth; chewing movements | Trigeminal |
| 1. The cranial nerves are tested in the following ways | I Olfactory- id of common odors II Optic- testing of visual acuity and visual field III Oculomotor- testing ability of eyes to move together in all directions, testing pupillary response 1. |
| 2. The cranial nerves are tested in the following ways | IV Trochlear- tested w/oculomotor; testing eye movements down/inward V Trigeminal- jaw strength and sensation of face, corneal reflex 2. |
| 3. The cranial nerves are tested in the following ways | VI Abducens- tested w/ oculomotor; testing eye movements VII Facial- ability of face to move in symmetry, ID of tastes VIII Acoustic (Vestibulocochlear)- testing of hearing through whisper or other means and checking equilibrium and balance 3. |
| 4. The cranial nerves are tested in the following ways | IX Glossopharyngeal- Id of tastes X Vagus- gag reflex, movement of uvula and soft palate XI Spinal Accessory- shoulder and neck movement XII Hypoglossal- Tonue motion 4. |