Facial Nerve

Question 0

The primary nucleus of origin for CN VII?

Answer 0

motor nucleus

Question 1

What type of information is carried by CN VII?

Answer 1

motor and sensory fibers

Question 2

what type of information is carried in the superior salivatory nucleus?

Answer 2

preganglionic parasympathetic

Question 3

What is the special sensory function of CN VII?

Answer 3

taste on anterior 2/3 of tongue

Question 4

sensory fibers carried in the facial nerve terminate?

Answer 4

upper part of the solitary nucleus

Question 5

the cell bodies of the sensory neuron are found in

Answer 5

geniculate ganglion

Question 6

Facial preganglionic parasymapthetic synpase with

Answer 6

Pterygopalatine and submandibular ganglion

Question 7

General sensation from the external ear and lateral tympanic membrane are carried to____1_____. axons from these neurons carry information to the ____2__.

Answer 7

1- geniculate ganglion

2- solitary nucleus

Question 8

taste information travels through neurons with cell bodies found in the ___1__ and is terminates in the ____2___.

Answer 8

1-geniculate ganglion

2- solitary nucleus

Question 9

specific neurons carrying taste from the anterior 2/3 part of the tongue are found in

Answer 9

chorda tympani

Question 10

the motor nucleus receives information from

Answer 10

both cerebral hemispheres

Question 11

inferior part of the face receives information only from

Answer 11

the contralateral cortex

Question 12

the motor nucleus receives information from

Answer 12

reticular formation

Question 13

Preganglionic parasympathetic fibers from the superior salivatory nucleus synpase in

Answer 13

either the pterygopalatine ganglion or the submandibular ganglion

Question 14

postganglionic fiber supply

Answer 14

the lacrimal gland, submandibular and sublingual gland as well as small glans in the oral and nasal cavities

Question 15

the apparent origin of CN VII

Answer 15

junction of Pons and Medulla oblongata, lateral to CN VI and medial to CN VIII

Question 16

before existing the CNS, fibers from the motor nucleus

Answer 16

first travel posteriorly and arch around the abducens nucleus

Question 17

What two roots are present at the apparent origin

Answer 17

1-motor root ( facial nerve proper)

2- intermediate nerve (lateral to motor root)

Question 18

the intermediate nerve carries what type of info

Answer 18

sensory and parasympathetic

Question 19

where do the two roots go after existing the CNS

Answer 19

internal acoustic meatus

Question 20

where is the internal acoustic meatus located

Answer 20

the petrous part of the temporal bone

Question 21

where is the geniculate ganglion located

Answer 21

after the facial canal and bends posteriorly forming the external genu of the facial nerve

Question 22

what nerve comes off the geniculate ganglion and travels anteriorward

Answer 22

greater petrosal nerve

Question 23

the greater petrosal nerve re-enters the petrous part of the temporal bone through the

Answer 23

foramen lacerum

Question 24

traveling in the pterygoid canal the greater petrosal nerve joins up with

Answer 24

pterygopalatine ganglion

Question 25

what type of information is carried by the greater petrosal nerve

Answer 25

preganglionic parasympathetic

Question 26

the greater petrosal nerve will stimulate secretion of

Answer 26

lacrimal, nasal, and palatal glands

Question 27

what is another name for the greater petrosal nerve

Answer 27

superficial petrosal nerve

Question 28

what is the second nerve given off by the facial nerve in the facial canal

Answer 28

nerve to the stapedius

Question 29

the nerve to the stapedius only carries

Answer 29

motor fibers

Question 30

nerve to the stapedius supplies the stapedius muscle, what is the action of this muscle?

Answer 30

stabilize the stapes, provide protection from loud noises primarily our own voice

Question 31

what is the third branch coming off the facial nerve in the facial canal

Answer 31

the chorda tympani

Question 32

the chorda tympani carries what type of information

Answer 32

preganglionic parasympathetic fibers and taste fibers

Question 33

the chorda tympani traverses the tympanic cavity and leave the temporal bone through the

Answer 33

pterygotympanic fissure

Question 34

what does the chorda tympani combine with

Answer 34

the lingual nerve, a branch of the mandibular division of the trigeminal nerve

Question 35

what other foramen does the remaining fibers of the facial nerve pass through

Answer 35

stylomastiod foramen

Question 36

the facial gives off three branches between the stylomastiod foramen and the parotid gland what are they.

Answer 36

the digastric branch, stylohyoid branch, posterior auricular nerve

Question 37

the digastric branch supplies what

Answer 37

the posterior belly of the digastric muscle

Question 38

the stylohyoid branch supplies the

Answer 38

stylohyoid muscle

Question 39

the posterior auricular nerve has two branch what are they

Answer 39

the occipital branch, auricular branch

Question 40

the occipital branch supplies the

Answer 40

occipital muscle and is the larger one

Question 41

the auricular branch supplies

Answer 41

the posterior auricular muscles, and the intrinsic muscles of the outer part of the ear

Question 42

once the facial nerve enters the parotid gland it forms the parotid plexus and what two trunks

Answer 42

temporofacial, cervicofacial

Question 43

what are the five branches given off by the facial nerve after the two trunks

Answer 43

temporal branch, zygomatic branch, buccal branch, marginal mandibular branch, cervical branch

Question 44

temporal branch supply what

Answer 44

intrinsic auricular muscles, superior and anterior auricular muscles

Question 45

what branches come together to supply the orbicularis oculi, corrugator supercilii, and frontal belly of the occipitofrontalis

Answer 45

temporal branches, auriculotemporal (V3), and zygomaticotemporal nerve (V2)

Question 46

what supplies the orbicularis oculi?

Answer 46

zygomatic branched of the parotid plexus

Question 47

Buccal branches supply what muscles

Answer 47

buccinator, orbicularis oris and levator anguli oris

Question 48

these branch supplies the Risorius, and muscles of the chin and lower lip; it may join with the mental nerve of (V3)

Answer 48

marginal mandibular branch

Question 49

what travels inferiorly to supply the platysma

Answer 49

cervical branch

Question 50

unilateral paralysis of the facial nerve, can develop overnight and resolve in 3wks 12-18 mo for a full recovery

Answer 50

Bell's Palsy

Question 51

removal of the parotid gland, making the facial n. vulnerable; usually due to a tumor

Answer 51

superficial parotidectomy