Pns V: Facial Nerve - Cn Vii

Front 1

The facial n. emerges form the brainstem at the _______, in line with the ____ of the medulla. The n. lies in angle btw the lateral pons and inferior aspecto fo the cerebellum, ______

Back 1

inferior pontine sulcus
postolicary sulcus
cerebellopontine angle

Front 2

the CN components of CN VII are

Back 2

SVE, GVE, SVA and GSA

Front 3

CN VII consists of 2 primary roots

Back 3

motor root (larger division)
nervus intermedius (smaller division)

Front 4

motor roots of CN VII carries what fibers?

Back 4

branchial motor fibers (SVE)

Front 5

nervus intermedius contains what fibers?

Back 5

preganglionic parasympathetics (GVE)
SVA - taste (special sensory fiber)
GSA - general sensory fiber

Front 6

branchial motor efferent fibers (SVE) arise from ______. SVE fibers of CN VII innervates _________.

Back 6

facial motor nucleus

innervates muscles derived from the second pharyngeal arch

Front 7

the axon of the motor neurons exiting the nucleus wraps around the _____, forming the internal _______

Back 7

wraps around the abducent nucleus

forming the internal genu of the facial n.

Front 8

SVA and GSA fibers of CV VII arise from primary cell bodies in the ________ w/i the temporal bone. The taste fibers (SVA) terminate in the rostral end of the ______________. General sensory fibers (GSA) terminate in the ________.

Back 8

in the geniculate ganglion

nucleus of solitarius (gustatory nucleus)

spinal nucleus of CNV

Front 9

preganglionic parasympathetic fibers of GVE in the nervus intermedius arise from _______

Back 9

superior salivary nucleus

Front 10

CN VII transits the subarachnoid space and enters the temporal bone thru the _______

Back 10

thru the internal acoustic meatus

Front 11

what other nerve also enters internal acoustic meatus?

Back 11

CN VIII

Front 12

CN VII courses through the _____ within the petrous portion of the temporal bone, branches extensively to give off 3 nerves" ___, ____, ____. facial nerve trunk (motor trunk of VII) exits the cranial base via the ____.

Back 12

facial canal

greater petrosal n., chorda tympani, n to stapedius

stylomastoid foramen

Front 13

the greater petrosal n. exits the temporal bone thru ______ into ______ exit the skull thru ______. The nerve passes thru the pterygoid canal to reach the ____.

Back 13

hiatus of the greater petrosal n. .... middle cranial fossa .... foramen lacerum .... pterygopalatine ganglion

Front 14

stapidial n. innervates _____ muscle

Back 14

stapedius muscle

Front 15

chorda tympani exits the cranium thru the _____ at the medial end of the ______ to enter the _______ fossa

Back 15

anterior inter chordae
petrotrympanic fissure
infratemporal fossa

Front 16

Upon exiting the stylomastoid formen, facial nerve trunk gives off 3 branches: ____, _____, _____.

Back 16

posterior auricular, digastric and stylohyoid n.

Front 17

5 segments of CN VII w/i the facial canal:

Back 17

tympanic -> external genu -> labyrinthine
tympanic -> mastoid -> trunk

Front 18

5 segments of CN VII
_____ travels posteriorly and laterally along the medial wall of the middle ear cavity.
_____ includes the geniculate ganglion.
_____ passes above the labyrinth housing the vestibular system.
_____ gives rise to the nerve to stapedius and the chorda tympani.

Back 18

tympanic
external genu
labyrinthine
mastoid

Front 19

____ fibers of CN VII innervate second arch derivatives: (3) muscles

Back 19

SVE fibers of motor trunk of VII

1. muscle of facial expression m.
2. stylohyoid + posterior digastric m.
3. stapedius m.

Front 20

SVE fibers of facial nerve trunk ramify w/i the parotid gland to form ______.

Back 20

parotid plexus

Front 21

parotid plexus has 5 major branches:

Back 21

Temporal
Zygomatic
Buccal
Marginal mandibular
Cervical

Two Zebras Bit My Coccyx

Front 22

_____ enters parotid gland and gives off 5 nerves.
Painfully Two Zebras Bit My Coccyx

Back 22

posterior auricular n.

Front 23

temporal n. innervates ____ m., which enable patients to _______

Back 23

frontalis m.

raise eyebrow

Front 24

zygomatic n. innervates _____ m., which enable patients to _____.

Back 24

orbital m.

shut eye tightly

Front 25

buccal n. innervates ____ m., which enable patients to _______.

Back 25

buccinator m.

pucker lips, are upper teeth, blow out or whistle

Front 26

cervical n. innervates ____ m, which enable patients to _______

Back 26

platisma m.

flare skin of the neck

Front 27

tumors of the parotid gland may compress or destroy _____.
Parotid tumor has tendency to extend toward the ________ (2).

Back 27

facial nerve fibers

stylomastoid formen and facial canal

Front 28

greater petrosal nerve conveys secretomotor fibers which, after synapsing in the ______, innervate 4 glands.

Back 28

ptergopalatine ganglion

innervate the lacrimal gland, nasal + paranasal mucosa + palatine gland.

Front 29

chorda tympani conveys secretomotor fibers which synapse in the ______ ganglion and innervate the ______ glands (2).

Back 29

submandibular ganglion

submandibular and sublingual salivary glands

Front 30

greater petrosal n. and chorda tympani project from ____ nucleus

Back 30

pons - superior salivary nucleus

Front 31

lingual n. joins _______ and synapse @ submandibular ganglion

Back 31

chorda tympani

Front 32

entering the pterygoid fossa, the greater petrosal n. is joined by the ______ (postganglionic sympathetics) to form ________

Back 32

deep petrosal n.

Np of pterygoid canal or Vidian N.

Front 33

lacrimal gland is innervated ______, a postganglionic autonomic fibers, which accompany the _____ branch of V2

Back 33

greater petrosal n.

zygomatic branch of V2

Front 34

nasal mucosa is innervated by greater petrosal n, a postganglionic autonomic fibers, which accompany ______ and _____ branches of V2

Back 34

posterior lateral nasal and nasaopalatine branches of V2

Front 35

palatine glands are innervated by greater petrosal n., a postganglionic autonomic fibers which accompany _____ and _____ branches of V2

Back 35

greater and lesser palatine branches of V2

Front 36

taste buds detect____, water-soluble molecules

Back 36

tastants

Front 37

nerve ending innervating the taste buds are from CN __, __ and ___.

Back 37

CN VII, IX, X

Front 38

taste buds are found: 4 places

Back 38

1. entire lingual dorsum + sides of tongue
2. epiglottis
3. lingual aspect of soft palate
4. posterior oropharynx

Front 39

taste buds are found in 3 types of papillae:

Back 39

circumvallate, fungiform, foliate papillae

Front 40

what kind of papillae contain only general sensory . endings only?

Back 40

filiform papillae

Front 41

anterior 2/3 of tongue have dual innervation:

Back 41

chorda tympani (CN VII) - taste
lingual n. (CN V3) - somatic sensation

Front 42

central projections of taste afferents in peripheral ganglia project to the ____ of medulla

Back 42

nucleus solitarius

Front 43

gustatory dysfunction usually produces

Back 43

ageusia, hypogeusia, dysgeusia

Front 44

some sources claim that the greater petrosal n. or chorda tympani conveys taste fibers

Back 44

T

Front 45

posterior auricular n. have _____ and ____ fibers.

Back 45

branchial motor fibers and afferent fibers

Front 46

branchia motor fibers of posterior auricular n. innervate

Back 46

auriculares and occipitalis

Front 47

afferent fibers of posterior auricular n. convey general sensation from ______

Back 47

the skin of concha of the external ear, small patch of skin behind the ear and a portion of the superficial aspect of the tympanic membrane

Front 48

Bell's Palsy is inflammation of CN VII that affect all actions of the

Back 48

ipsilateral facial muscles

Front 49

Bell's Palsy symptoms include
1. facial asymmetry with gravitational sagging of face and scalp due to ...
2. inability to wrinkle forehead on command due to ....
3. failure to retain tears and saliva in orbit and mouth respectively due to ...
4. retention of food in oval vestibule

Back 49

1. due to loss of tonus of facial m.
2. due to paralysis of frontalis (temporal branch of facial n)
3. due to paralysis of orbicularis oculi (zygomatic CN VII) and orbicularis oris (buccal and mandibular n.)
4. due to paralysis of buccinator (buccal branch of CN VII)

Front 50

symptoms of _____ lesion of CN VII may be more extensive depending upon the exact location of the lesion btw ____ and _____

Back 50

peripheral leision

pons and stylomastoid foramen

Front 51

peripheral lesion of CN VII have these symptoms:

Back 51

dysgeusia, hyperacusis (perception of loud sound) leision @ stapedius n., reduce lacrimation (greater petrosal n. leision) and salivation.