(E3) 2 - Tongue Innervation

Question 1

The trigeminal nerve emerges from _____

Answer 1

Pons

Question 2

Trigeminal nerve CN V has _______ fibers (be specific which branch)

Answer 2

motor and sensory

Just Mandibular Nerve
- General Sensory and Branchial Motor

Question 3

The trigeminal nerve has nuclei and a ganglion. (name them)

Answer 3

Question 4

Mandibular nerve (CN V3) is one nerve that courses on ______ then through _______

Answer 4

lateral wall of the cavernous sinus
then through foramen ovale

Question 5

Semilunar ganglion is found ______

Answer 5

on the wall of the cavernous sinus

Question 6

Describe the Semilunar (trigeminal) ganglion

Answer 6

Question 7

General sensation from the anterior 2/3 (oral part) of the tongue is conveyed by _____

Answer 7

Lingual nerve (branch of V3)

Question 8

________ neurons have cell bodies located in semilunar (trigeminal) ganglion

Answer 8

Pseudounipolar

Question 9

________ projects back to main
sensory nucleus of trigeminal nerve

Answer 9

Central process

Question 10

Facial nerve emerges from brainstem at ________

Answer 10

ventrolateral pontomedullary junction (next to vestibulocochlear nerve)

• side of brainstem where pons and medulla meet

Question 11

The facial nerve has _____ fibers

Answer 11

Question 12

Facial nerve has 2 motor nuclei and a sensory ganglion. Name them.

Answer 12

Question 13

Is there a facial only sensory nucleus within the CNS

Answer 13

NO

Question 14

Facial Nerve: General sensory fibers project to ________ and taste fibers project to the _______

Answer 14

• trigeminal nuclei
• solitary nucleus

Question 15

Superior salivatory nucleus carries ________ fibers to ________

Answer 15

• parasympathetic
• submandibular and sublingual salivary glands (and others)

Question 16

Facial nucleus carries motor fibers to _____

Answer 16

facial muscles

Question 17

Geniculate ganglion conveys sensory fibers from ______

Answer 17

tongue (taste) and ear structures

Question 18

Describe the Geniculate Ganglion

Answer 18

Question 19

Chorda tympani branches FROM _________ nerve within _______ bone

Answer 19

• facial
• temporal

Question 20

Facial nerve (enters) skull through __________

Answer 20

internal acoustic meatus

Question 21

Some fibers of facial nerve are technically separate as _________

Answer 21

intermediate nerve

Question 22

Describe the Intermediate Nerve (what does it carry)

Answer 22

Question 23

Facial nerve enters skull through internal acoustic meatus with ________

Answer 23

vestibulocochlear nerve

Question 24

_________ is branch of facial nerve that courses in between facial and vestibulocochlear nerves

Answer 24

Intermediate nerve

Question 25

Describe the course of motor fibers of the facial nerve and what they innervate.

Answer 25

Question 26

Describe the branching and course of Chorda Tympani.

Answer 26

Question 27

What does Chorda Tympani join with and what does it contain?

Answer 27

Question 28

Answer 28

Submandibular Ganglion

Question 29

Greater Petrosal Nerve - Where does it come from and where does it convey sensation?

Answer 29

Question 30

Taste conveyed from the tongue towards the CNS. Describe the course of the taste fibers.

Answer 30

Question 31

Taste fibers have cell bodies located in ______

Answer 31

geniculate ganglion

Question 32

Describe the course of parasympathetic fibers to submandibular and sublingual glands. (opposite direction of taste fibers)

Answer 32

Question 33

Where does the Glossopharyngeal nerve emerge?

Answer 33

from the lateral medulla just superior to the vagus nerve

Question 34

Both glossopharyngeal and vagus nerves pass through _______

Answer 34

jugular foramen (with accessory nerve and internal jugular vein)

Question 35

What type of fibers does the Glossopharyngeal nerve have?

Answer 35

Question 36

Glossopharyngeal nerve has nuclei and ganglia. Name them

Answer 36

Question 37

Glossopharyngeal Nerve: What does the inferior salivatory nucleus convey?

Answer 37

Parasympathetic fibers to glands

Question 38

Glossopharyngeal Nerve: What does the nucleus ambiguous convey?

Answer 38

Motor fibers to stylopharyngeus muscle

Question 39

Describe the location of the Glossopharyngeal Ganglia

Answer 39

Question 40

Describe the course of the Glossopharyngeal Nerve

Answer 40

Question 41

Glossopharyngeal nerve passes between _______

Answer 41

internal jugular vein and internal carotid artery

Question 42

Glossopharyngeal nerve passes deep to hyoglossus muscle into ______ between ______

Answer 42

Question 43

Glossopharyngeal nerve conveys sensation and taste from ________

Answer 43

posterior 1/3 (pharyngeal part) of tongue

Question 44

Superior glossopharyngeal ganglion has cell bodies for ______

Answer 44

general sensation

Question 45

Inferior glossopharyngeal ganglion has cell bodies for _____

Answer 45

taste

Question 46

Glossopharyngeal: All fibers run through both ganglia back to ______ for taste and main _______ for sensation.

Answer 46

- solitary nucleus - sensory trigeminal nucleus

Question 47

Describe the course for taste from the posterior 1/3 of the tongue

Answer 47

Question 48

Describe the course for general sensation from the posterior 1/3 of the tongue

Answer 48

Question 49

Motor innervation to tongue is from _____ nerve (palatoglossus is innervated by ______ nerve)

Answer 49

- hypoglossal - vagus

Question 50

What sensory nerves innervate the tongue?

Answer 50

Question 51

What nerves convey taste from the tongue?

Answer 51

Question 52

*IMAGE - Tongue Inenrvation*

Answer 52

Question 53

Vagus nerve emerges from _____

Answer 53

Question 54

What type of fibers does the vagus nerve have?

Answer 54

Question 55

Answer 55

Internal Laryngeal Nerve

Question 56

Vagus Nerve: GENERAL SENSATION - course, cell body location, and central process

Answer 56

Question 57

Vagus Nerve: TASTE - course, cell body location, and central process

Answer 57