Tongue in cheek
Which muscle is responsible for puffing out the cheeks and making sure we don't chew our cheeks?
Buccinator m.
CN X provides major parasympathetic outflow to smooth muscle and glands of the thoracic and abdominal viscera. What effect would CN X have on the heart?
Which 2 cranial nerves carry SSA fibers?
CN II (vision) & CN VIII (balance & hearing)
The pupillary light reflex tests which cranial nerves?
CN II and III
What CN (name & #) is responsible for movement of the face? Sensation of the face?
CN VII - Facial
CN V - Trigeminal
The muscles that provide chewing power for breaking down foods are collectively called _____ and innervated by which CN (name & #)?
Muscles of mastication
CN V3
This CN carries GVE axons to the parotid gland, the largest salivary gland in the body.
CN IX - Glossopharyngeal
What axon fiber type is responsible for pupil constriction & lacrimation?
GVE
Sensation of the upper eyelid and cornea are provided by which CN (name and #)?
CN V1
A cold sore on the upper lip would transmit pain signals via G-- axons carried by which CN (Name and #)?
Left CN V2 - Maxillary division of Trigeminal
The pain of getting a tongue piercing would most likely be transmitted by which CN (name and #)?
CN V3 Mandibular branch of Trigeminal
What are the GVA fibers of CN X responsible for?
general visceral afferents - sending sensory signals of viscera to brain - chemo & baroreceptors
A hypophyseal tumor is most likely to result in what visual deficit?
Loss of peripheral vision or loss of temporal FOV
Light is shined into the right eye. Both pupils constrict. Which CN is the problem?
None
Which branch of CN VII is responsible for saliva production and taste from the anterior 2/3 of the tongue?
Chorda tympani
The mucous membranes of the cheek are innervated by which cranial nerve?
CN V3 - Mandibular division of Trigeminal
These cranial nerves are responsible for innervating the dura mater of the 1) anterior, 2) middle, and 3) posterior cranial fossae, respectively.
1) CN V1
2) CN V2, V3 (one or both will receive credit)
3) CN X
A patient presents with strabismus of the right eye, pulling it medially and superiorly. Which CN (name & #) is most likely affected?
CN IV - Trochlear
A piece of sterile gauze is touched to the right eye. The left eye blinks in response. Which CN is the problem?
Right CN VII
A patient presents with facial paralysis. All other functions appear to be normal. Which bony structure would most likely be the site of injury?
Stylomastoid foramen
Describe the SVA distribution of the tongue.
anterior 2/3 CN VII - Chorda tympani branch of facial
posterior 1/3 CN IX - Glossopharyngeal
A 56-year-old man recently underwent surgery to repair an aortic arch aneurysm. How would the patient have presented in this case?
Hoarseness of voice / vocal changes
Name the innervations and muscles that perform the following 1) closure of eyelids, 2) abduction of eye, 3) opening of eyelid, 4) adduction of eye
1) orbicularis oculi m. - CN VII
2) lateral rectus m. - CN VI
3) levator palpebrae superioris - CN III
4) medial rectus m. - CN III
During routine checkup, physician uses a tongue depressor, asks the patient to phonate, and notes deviation of the uvula to the right. Which CN is the problem?
left CN X
A 45-year-old woman is diagnosed with a neuroma. Based on the following signs and symptoms: 1) chronic dry eye, 2) tinnitus, 3) taste changes, where is the site of the problem?
internal acoustic meatus - CN VII and VIII are affected here