Cranial Nerves Flashcards
Name the 12 cranial nerves.
I olfactory II optic III oculomotor IV trochlear V trigeminal VI abducens VII facial VIII vestibulocochlear (acoustic) IX glossopharyngeal X vagus XI spinal accessory XII hypoglossal
What are the 6 types of fibers carried by cranial nerves?
- somatic motor
- visceral motor
- somatic sensory
- visceral sensory
- special sensory
- branchial motor
What are the 8 sensory ganglia of the cranial nerves?
- semilunar
- geniculate
- spiral
- vestibular
- inferior & superior of CN IX
- inferior & superior of CN X
What are the 5 parasympathetic ganglia of the cranial nerves?
- ciliary
- pterygopalatine
- submandibular
- otic
- intramural (in wall of organ)
What are the fiber types of the parasympathetic ganglia?
visceral motor
With which cranial nerve is the semilunar ganglion associated?
CN V
With which cranial nerve is the geniculate ganglion associated?
CN VII
With which cranial nerve is the spiral ganglion associated?
CN VIII
With which cranial nerve is the vestibular ganglion associated?
CN VIII
With which cranial nerve are the inferior & superior sensory ganglia associated?
CN IX has a pair; CN X has a pair
What is the mnemonic for remembering which cranial nerves are sensory and which are motor?
Some Say Marry Money But My Brother Says Big Brains Matter Most
What cranial nerve innervates the palate, pharynx, and larynx?
X - vagus
except stylopharyngeus muscle
What nerve innervates the stylopharyngeus muscle?
IX - glossopharyngeal
What nerve innervates the tongue (motor)?
XII - hypoglossal
except palatoglossus - X
What nerves innervate the suprahyoid muscles?
C1
VII
nerve to mylohyoid
What nerves innervate the infrahyoid muscles?
ansa cervicalis (C1, C2, C3) C1
What nerves innervate the styloid muscles?
stylohyoid: VII
stylopharyngeus: IX
styloglossus: XII
What nerve innervates the muscles of mastication?
V3 (mandibular branch of trigeminal)
What are the nerves of taste?
palate: VII
anterior 2/3 of tongue: VII
posterior 1/3 of tongue: IX
base of tongue & epiglottis: X
What cranial nerve gives rise to the preganglionic parasympathetic fibers to sphincter pupillae & ciliary muscle?
III
What cranial nerve gives rise to the preganglionic parasympathetic fibers to lacrimal gland?
VII
What cranial nerve gives rise to the preganglionic parasympathetic fibers to mucous glands of nasal cavity & paranasal sinuses?
VII
What cranial nerve gives rise to the preganglionic parasympathetic fibers to minor salivary glands of palate & upper mucosa?
VII
What cranial nerve gives rise to the preganglionic parasympathetic fibers to submandibular gland, sublingual gland, and minor salivary glands of floor of mouth?
VII
What cranial nerve gives rise to the preganglionic parasympathetic fibers to parotid gland?
IX
What cranial nerve gives rise to the preganglionic parasympathetic fibers to mucous glands of pharynx & larynx?
X
If you have a middle ear infection, what nerve carries the pain sensation?
IX
What special sensory function does the glossopharyngeal nerve have?
taste for posterior 1/3 of tongue
What general sensory function does the glossopharyngeal nerve have?
posterior 1/3 of tongue, inner surface of TM, tympanic cavity, auditory tube, pharynx
What visceral sensory function does the glossopharyngeal nerve have?
carotid body & sinus
What branchial motor function does the glossopharyngeal nerve have?
stylopharyngeus muscle
What do the carotid body & carotid sinus sense?
carotid body: O2
carotid sinus: BP
What is innervated by the hypoglossal nerve?
All intrinsic and extrinsic muscles of the tongue except palatoglossus (vagus)
What is innervated by the spinal accessory nerve?
sternocleidomastoid, trapezius
With which nerve is the ciliary ganglion associated?
III
With which nerve is the pterygopalatine ganglion associated?
VII
With which nerve is the submandibular ganglion associated?
VII
With which nerve is the otic ganglion associated?
IX
With which nerve is the intramural (in wall of organ) associated?
X
