click below
click below
Normal Size Small Size show me how
Cranial Nerves
The stuff
Question | Answer |
---|---|
Main action of CN I | Smell |
Main action of CN II | Vision |
Main action of CN III | Movement of the eyes and pupils (medial, inferior, and superior rectus, and inferior oblique muscles) |
Main action of CN IV | Movement of the eyes (superior oblique muscle) |
Main action of CN V | Sensation of the face, sinuses, and teeth. Movement of the jaw, muscles of mastication. |
Main action of CN VI | Movement of the eyes laterally (lateral rectus muscle) |
Main action of CN VII | Taste (Anterior 2/3 of tongue), muscles of facial expression, innervation of most salivary glands |
Main action of CN VIII | Hearing, balance, and orientation |
Main action of CN IX | Innervation to the stylopharyngeus muscle, taste (posterior 1/3 of tongue), sensation of middle and external ear, innervation of the parotid gland |
Main action of CN X | Taste (superior pharynx), innervation to the muscles of the pharynx and larynx, autonomic innervation to the thorax and abdomen |
Main action of CN XI | Movement of neck and shoulders |
Main action of CN XII | Movement of the tongue |
Cranial exit of CN I | Cribriform foramina in cribriform plate |
Cranial exit of CN II | Optic canal |
Cranial exit of CN III | Superior orbital fissure |
Cranial exit of CN IV | Superior orbital fissure |
Cranial exit of CN V | Superior orbital fissure, foramen rotundum, foramen ovale |
Cranial exit of CN VI | Superior orbital fissure |
Cranial exit of CN VII | Internal acoustic meatus |
Cranial exit of CN VIII | Internal acoustic meatus |
Cranial exit of CN IX | Jugular foramen |
Cranial exit of CN X | Jugular foramen |
Cranial exit of CN XI | Jugular foramen |
Cranial exit of CN XII | Hypoglossal canal |
Cranial exit of ophthalmic branch of CN V | Superior orbital fissure |
Cranial exit of maxillary branch of CN V | Foramen rotundum |
Cranial exit of mandibular branch of CN V | Foramen ovale |