Cranial Nerves/Autonomics Flashcards
Pneumonic for the 12 cranial nerves?
Oh, oh, oh to touch and feel a guy’s vein and hotdog
CN I
Olfactory
CN II
Optic
CN III
Oculomotor
CN IV
Trochlear
CN V
Trigeminal
CN VI
Abducens
CN VII
Facial
CN VIII
Auditory (Vestibulocochlear)
CN XI
Glossopharyngeal
CN X
Vagus
CN XI
Accessory
CN XII
Hypoglossal
What cranial nerves run through the Cribiriform plate?
CN I
What cranial nerves run through the optic canal?
CN II
What cranial nerves run through the superior orbital fissure?
CN III, CN IV, CN V(V1), CN VI
What cranial nerves run through the foramen rotundum?
CN V(V2)
What cranial nerves run through the foramen ovale?
CN V(V3)
What cranial nerves run through the internal acoustic meatus?
CN VII, CN VIII
What cranial nerves run through the jugular foramen?
CN IX, X, XI
What cranial nerves run through the hypoglossal canal?
CN XII
Sensory nuclei in the brainstem?
Trigeminal, vestibular, cochlear, nucleus solitarius, nucleus of the spinal tract of the trigeminal
What are the two parts of the nucleus solitarius?
Gustatory rostral portion and the caudal portion
Nerves from the gustatory rostral portion of the nucleus solitarius
CN 7 and 9
Nerves from the caudal portion of the nucleus solitarius
CN 9 and 10
Nerves from the nucleus of the spinal tract of the trigeminal nerve
CN 5, 7, 9, 10
Motor nuclei in the brainstem?
Edinger-Westphal, oculomotor, trochlear, trigeminal motor, abducens, facial motor, superior and inferior salivatory, nucleus ambiguus, dorsal vagal, hypoglossal, accessory
Nerves from the Edinger-Westphal motor nuclei
CN 3
Nerves from the superior salivatory nuclei
CN 7
Nerves from the inferior salivatory nuclei
CN 9
Nerves from the nucleus ambiguus nuclei
CN 9 and 10
Where do sympathetic fibers arise from?
Superior Cervical ganglion
What do the sympathetic fibers travel on?
Vessels such as the deep petrosal nerve
All of the sympathetic fibers are what?
post-ganglionic
Where do the preganglionic parasympathetic fibers originate from?
Nuclei in the brainstem
Where do the preganglionic parasympathetic fibers synapse?
4 ganglia = ciliar, pterygopalatine, otic, submandibular
What carries the preganglionic parasympathetic fibers?
CN 3, 7, 9, 10
What carries the postganglionic parasympathetic fibers to their structures?
Branches of the trigeminal nerve
Modalities of CN I?
Special sensory – smell
Modalities of CN II?
Speical sensory – vision
Modalities of CN III?
GSE – many muscles in the eye
GVE – parasympathetic supply to constrictor pupillae and ciliary muscles via the ciliary ganglia
Modalities of CN IV?
GSE – supplies the superior oblique muscle of the eye
Modalities of CN VI?
GSE – supplies the lateral rectus muscle of the eye
If your left eye CANNOT ABduct, what is injured?
Abducens nerve - left abducent nerve palsy
If your right eye is downward and outward, pupil is dilated and eyelids are manually elevated, what is injured?
Right oculomotor nerve palsy
Modalities of CN V?
Branchial motor (SVE) and general sensory (GSA) – supplies sensation for most of the face
Main Opthalmic nerve branches
Lacrimal, frontal, nasociliary, mengineal branch
Main Maxillary nerve branches
Zygomatic, infraorbital, superior alveolar, palatine, meningeal
Main Mandibular nerve branches
Buccal, lingual, inferior alveolar, auriculotemporal, medial and lateral ptergoid, massateric, deep temporal and mylohyoid
If there is a lesion on the right side of CN XII what happens?
Tongue will be angled toward the right
What does the CN XII supply?
All intrinsic and extrinsic muscles of the tongue besides 1 (palatoglossus)
What does the CN XI supply?
Sternomastoid and trapezius muscles
What does the CN VIII supply?
Sensory – auditory and balance
What is the pneumonic for the facial nerve branches?
Tiny zebra bit my cheek
temporal, zygomatic, buccal, mandibular, cervical
