Cranial Nerves I/II Flashcards
CN III CN VII CN IX CN X
Parasympathetics
Parasympathetics
CN III CN VII CN IX CN X
CN III CN IV CN V(1) CN VI
via superior orbital fissure
CN VIII
Auditory n. or acoustic n. or vestibulocochlear n. (SSA)
CN IX
Glossopharyngeal n.
What does the anterior 2/3 of tongue?
Facial n. VII
What does the posterior 1/3 of tongue?
CN IX
What nerve goes through the jugular foramen?
CN IX
What nerve goes through the internal auditory meatus?
CN VIII and CN VII
Which CN does the carotid sinus?
CN IX
What innervates the parotid gland, and hitches a ride on CN V?
CN IX see GLOAP
What nerve innervates the stylopharyngeous muscle?
CN IX
Where did the stylopharyngeous m. come from in deco?
Gills
What n. carries most parasympathetics of all CN?
CN X
Slows heart, speeds up digestion
CN X
Muscles of pharynx and larynx done by…
CN X
SCM and trapezius m. by…
CN XI
Can’t shrug. Can’t turn head to opposite side.
Problem in XI
All muscles ending in glossus are innervated by
XII, except the palatoglossus which is done by CN X
Cut XII, then the tongue points towards
cut nerve. you lick your wounds.
Name four GSA
CN V: Trigeminal CN VII: Facial CN IX: Glossopharyngeal CN X: Vagus
Name 4 SVA
CN I: Olfactory n. CN VII: Facial N. CN IX: Glossopharyngeal n. CN X: Vagus n.
Name 3 GVA
CN VII CN IX CN X
Name 4 GVE
CN III CN VII CN IX CN X
Name 5 SVE
CN V CN VII CN IX CN X CN XI
Name 4 GSE
CN III CN IV CN VI CN XII
What is the only nerve to exit from the dorsal surface of the brain?
CN IV: trochlear
CN IV exits from what foramen?
Superior orbital fissure (like the oculomotor n.)
Which cranial nerve?
Trigeminal CN V
What are the 3 GSA nerves of the opthalmic division of CN V?
NFL
- Nasociliary n.
- Frontal n.
- Lacrimal n.
What nerve is GSA to the lacrimal gland?
What nerve makes the lacrimal gland cry?
What division contains the only motor branches of the trigeminal nerve?
V3 Maxillary
Which nerve travels through the mandible and exits the mental foramen?
What nerve provides GSA here?
CN V: trigeminal
What innervates the muscles of mastication? Eg. Masseter, temporalis, lateral and medial pterygoids?
Trigeminal CN V
Where did all these muscles originate from in development?
Which trigeminal n. division passes through the superior orbital fissure?
What division of the trigeminal n. is responsible for the “corneal reflex”?
What nerve exits the foramen rotundum?
What nerve exits the foramen ovale?
CN VI abducens exits what foramen?
What innervates the lateral rectus m.?
Name 4 nerves that exit the superior orbital fissure
CN III
CN IV
CN V1
CN 6
Which ganglion makes you cry and have a runny nose?
Pterogopalatine ganglion (from CN VII)
What nerve hitches a ride with CN V to supply taste to the anterior 2/3rds of the tongue?
III, VII, IX, X
I, II, VIII
IV, VI, XI, XII
Motor only CN
What do CN III, VII, IX, X have in common?
Name 3 CN that travel through the jugular foramen
CN IX
CN X
CN XI
CN XII innervates all tongue muscles EXCEPT
What innervates the posterior belly of the digastric muscle?
CN VII (facial)
Stick a fork at your uvula. What nerve feels it?
CN VII fibers that synapse in the pterygopalatine ganglion, and head towards the lacrimal gland, “hitch a ride” with what nerve?
Pneumonic for facial nerve CN VII
Anterior belly of the digastric m. is innervated by…
CN V3
(note: posterior belly is CN VII)
Innervation of stylohyoid m.?
Name 3 nerves that have sensory to ear pinna
V, VII, IX
Which cranial nerve does taste at back of tongue?
Pneumonic for GVE to parotid gland
GLOAP
Glossopharyngeal n. uses Lesser petrosal n. to Otic ganglion, then Auriculotemporal to Parotid
What ganglion does the lesser petrosal nerve (from CN IX) synapse with the auriculotemporal n. to the parotid?
Otic ganglion
What nerve crosses across the stylopharyngeus m. like a “strip on a barbers pole”?
Tongue pointing to right side.
Right side Lesion to CN XII
SVA occurs in which CN?
HINT: SVA is smell or taste
CN I (smell)
CN VII (ant. 2/3 tongue taste)
CN IX (post. 1/3 tongue taste)
CN X (epiglottis tastebuds)
