EX3 Neuro - CN V and VII Flashcards Preview

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Flashcards in EX3 Neuro - CN V and VII Deck (71):
1

In which nucleus would you find the SVE component of the facial nerve

facial motor nucleus

2

In which nucleus would you find the GVE component of CN VII and what branch of autonomins

superior salivatory nucleus
parasympathetic

3

In which ganglion would you find the GVE component of CN VII

submandibular ganglion
pterygopalatine ganglion

4

In which nucleus would you find the GSA component of CN VII

trigeminal spinal nucleus

5

In which ganglion would you find the GSA component of CN VII

geniculate ganglion

6

In which nucleus would you find the SVA component of CN VII

solitary nucleus

7

In which ganglion would you find the SVA component of CN VII

geniculate ganglion

8

In which nucleus would you find the GVA component of CN VII

solitary nucleus

9

In which ganglion would you find the GVA component of CN VII

geniculate ganglion

10

How do the functional components of CN VII compare with CN IX and X

they are the same functional components
share the same cell body origin in the solitary nucleus (SVA) and trigeminal spinal nucleus (GSA)

11

This component of CN VII is responsible for the muscles of facial expression

SVE

12

This component of CN VII is responsible for the cranial parasympathetics

GVE

13

This component of CN VII is responsible for the skin of the ear; pain, touch, temperature

GSA

14

This component of CN VII is responsible for taste to the anterior 2/3 of the tongue

SVA

15

This component of CN VII is responsible for the visceral sensibility of the palatine tonsil and posterior nasal cavity

GVA

16

What makes up the facial nerve proper

SVE fibers

17

What makes up the nervus intermedius of VII

GVE and sensory fibers

18

What is the course of the facial nerve out of the skull

from the skull though stylomastoid foramen
pass through parotid gland where a plexus forms

19

This nucleus is the parasympathetic component in the nervus intermedius

superior salivatory nucleus

20

These nerve branches of CN VII are part of the parasympathetic component of nervus intermedius

greater petrosal
chroda tympani

21

The greater petrosal nerve is associated with which nucleus

pterygopalatine nucleus

22

The chroda tympani is associated with which nucleus

submandibular gland - salivation

23

This is responsible for closing the eye (closing lips)
opening the eye?

SVE; muscles of facial expression
opening = CN III

24

The stapedius muscle controlled by SVE does what

modulates sound volume

25

Salivation is controlled by what component

GVE

26

Lacrimation is controlled by what component

GVE - lubricates cornea

27

Which glands are innervated by CN VII

lacrimal
submandibular
sublingual

28

This is the irritation of the cornea and paresis (partial paralysis) of facial muscles above and below the eye (SVE)

Bell's Palsy

29

What are some additional symptoms of Bell's Palsy

hyperacusis (increased sensitivity to noise)
reduced lacrimation and salivation
crocodile tears
numbness or pain of the ear, tongue, or face

30

What causes Bell's Palsy

lesion of the facial nerve; acute facial nerve paralysis will be on the same side of the lesion

31

What is the result of facial nerve paralysis involving Ball's Palsy

paralysis is complete over half the face on same side of lesion

32

What will result as a lesion to the facial nerve in the internal auditory canal

all facial nerve components run through the internal auditory canal, a lesion can damage all components (motor and sensory)

33

What will result as a lesion to the facial nerve in the facial canal

lesion can damage all components (motor and sensory); chorda tympani/facial nerve branches
can also be damaged from periphery

34

What will result as a lesion to the facial nerve in the stylomastoid foramen

damage/paralysis to the muscles of facial expression (SVE) and GSA (skin of ear)

35

A lesion of the upper motor neuron in the corticobulbar tract results in this

opposite side (contralateral)
weakness to the lower face and sparse weakness to upper face; eye movements not effected

36

A lesion of the lower motor neuron in the facial nucleus results in what type of paralysis

ipsilateral; both lower and upper face affected; eye movements effected

37

This is a result of the parasympathetic fibers to submandibular ganglion being re-routed to pterygopalatine ganglion

Crocodile tears; unilateral tearing in anticipation of, and during meals
history of Bell's palsy

38

This is a result of a surpanuclear lesion (above nucleus)

paralysis of muscles of facial expression below the level of the eye
opposite the lesion

39

In which nucleus would you find the SVE component of CN V (cell body of origin)

trigeminal motor nucleus

40

What is the cell body of origin /nucleus of the GSAp and GSAe component of CN V and where does it terminate

unipolar cell bodies; trigeminal mesencephalic nucleus (GSAp)
terminate - trigeminal spinal and principal (GSAe)

41

What is unique about the GSA component of CN V (trigeminal mesencephalic nucleus)

Do not have cell bodies in spinal cord ganglia or cranial nerve ganglia

42

What does the SVE component of trigeminal control

muscles of mastication

43

What does the GSA component of trigeminal control

propriception of the muscles of mastication
pressure/tension of periodontal ligaments
sensation; skin of face, oronasal mucous membranes, teeth, dura mater, pain crude touch, temperature

44

What are the three divisions of the trigeminal nerve

opthalmic (I)
maxillary (II)
mandibular (III)

45

What region is served by the ophthalmic division of trigeminal

upper face
sensory only

46

What region is served by the maxillary division of trigeminal

middle face (above mouth, below eyes)
sensory only

47

What region is served by the mandibular division of trigeminal

lower face
sensory and motor

48

What cranial nerves besides trigeminal contribute axons to the trigeminal spinal tract and terminate in the trigeminal spinal nucleus (pars caudalis)

VII - ear
IX - ear
X - ear

49

What is meant by the somatototopic organization of the trigeminal spinal tract

it means that there are clear divisions between the divisions of trigeminal; like an onion - a certain portion of the face is directly correlated tot a certain portion of the spinal tract/nucleus

50

Where is the trigeminal mesencephalic nucleus found

rostral pons and mesencephalon adjacent to the ventricle
- midbrain

51

Where is the trigeminal motor nucleus found

dorsolateral pontine tegmentum
- pons

52

Where is the trigeminal spinal nucleus found

pons

53

Where is the trigeminal principal sensory nucleus found

pons

54

What are the two ascending projections from the trigeminal sensory nuclei (trigeminal spinal nucleus and trigemin pontine (principal) sensory nucleus)

ventral trigeminothalamic
dorsal trigeminothalamic
project to ventral posteriomedial nucleus (VPM)

55

What is different about the ventral and dorsal trigeminothalamic pathways

ventral projects contralaterally to VPM; pain, touch temp
dorsal projects bilaterally to VPM; pressure, discriminatory touch
but both give off fibers to nearby reticular formation

56

Where is the VPM located and project into

thalamas, projects into the post central gyrus

57

This is the heavily myelinated homologue of the posterior column - medial lemniscal system; proprioception

trigeminal mesencephalic nucleus

58

This is the heavily myelinated homologue of the posterior column - medial lemniscal system; discriminative touch

trigeminal principal nucleus

59

This is the lightly myelinated homologue of the anteriolateral system; pain, crude touch, temperature

trigeminal spinal nucleus

60

This stimulates the cornea and the ispsilteral eye closes

direct corneal reflex

61

This stimulated the cornea and the contralateral eye closes

consensual corneal reflex

62

The trigeminal nerve projects where to stimulate the cornea

trigeminal principal nucleus
trigeminal spinal nucleus

63

Which trigeminal nucleus relays bilaterally to facial nucleus (involving corneal reflex)

trigeminal spinal nucleus

64

What is the jaw-jerk reflex

the tapping of a persons jaw at the chin to test the trigeminal nerve innervating the masseter; myotatic

65

This will cause the jaw-jerk reflex to become exaggerated

upper motor neuron lesion accentuates reflex
lower motor neuron lesion lessens reflex

66

This is usually unilateral, excruciating, lancing (spontaneous) pain affecting the ophthalmic (

trigeminal neuralgia

67

What can affect trigeminal neuralgia

compression of nerve
trigger point
onset of middle age
often response to drug the ape
microvascular decompression may be effective

68

What is trigeminal tractotomy

the severing or transection of the trigeminal nerve to relieve pain

69

This regions of the trigeminal spinal nucleus involves input from the oral cavity

pars oralis

70

This region of the trigemninal spinal nucleus involves input from the trigeminal autonomic reflex

pars interpolarsi

71

This region os the trigeminal spinal nuclues is important in pain processing

pars caudalis