page 128- 137 Flashcards Preview

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Flashcards in page 128- 137 Deck (90):
1

floor of mouth 

ant 2/3 tongue

land lingual ging.

ling. nerve supply

2

Lingual NErve

deep to ------(antermedial  to ---- ---- nerve)

runs b/n ----- pterygoid and ------- ramus 

to enter side of tongue--------

continues forward b/n hyoglossus and deep part of ------ gland

--------. ganglion hangs from ling nerve(top of ------ m)

it runs across Submand duct to ---- ------

deep to lat pterygoid(antermedial  to in alv nerve)

runs b/n medial pterygoid and mandibular ramus 

to enter side of tongue obliquely

continues forward b/n hyoglossus and deep part of aubmandibular gland

Submand. ganglion hangs from ling nerve(top of hyoglossus m)

it runs across Submand duct to tongue tip

3

chorda tympani contributes

pregang PS fibers to submand ganglion

taste fibers of ant 2/3 tongue

4

4 paired nuclie

(M and S)

trigeminal nuclei

5

motor nucleus

 

lateral pons

6

Motor nucleus

motor info originates in ---- and ------ cortices

modulated by ----- ------ and striatal motor system

descend as --------- tracts to

-------- ---------of trigeminal where

LMN projects past the------ --------(w/o synapse) 

2 the respective effector muscle

motor info originates in motor (area 4) and premotor (area 6) cortices

modulated by basal ganglia and striatal motor system

descend as corticobulbar tracts to

motor nucleud of trigeminal where

LMN projects past the trigeminal ganglion(w/o synapse) 

2 the respective effector muscle

7

Sensory nucleus

Pons

8

sensory nucleus

all sensory info from face relayed thru

---- nucleus of thalamus

From here info relays to the

------- cortex (areas3,1,2)

The ------ segment of sensory homunculus comprises large area of ------ -------- --------

senspry nucleus

all sensory info from face relayed thru

VPM nucleus of thalamus

From here info relays to the

somatosensory cortex (areas3,1,2)

The facial segment of sensory homunculus comprises large area of lateral parietal lobe

9

Spinal trigeminal nucleus

midpons to cervical cord

10

spi. tri. nucleus

------/------ from face travel to ------ --------- nucleus

(-------- travel from body in the ---------- tract)

Pain/ temp from face travel to spinal trigeminal nucleus

(pain/temp travel from body in the spinothalamic tract)

11

mesencephalic nucleus

upper pons midbrain border

12

propioceptic inputs not located with trigeminal ganglion

propioceptive inputs synapse in --------

Mesencaphelic nucleus

13

 

all sensory info from face relayed through VPM nucleus of thalamuc; sensory info from rest of body is through VPL

CN 5 sensory

14

CN5

from the ---- ------(VPM or VPL)

info relays to -------- cortex(area3,1,2)

----- segment of sensory homunculus comprises large area of lateral parietal lobe

CN5

from the thalamic nuceli(VPM or VPL)

info relays to somatosensoyr cortex(area3,1,2)

facial segment of sensory homunculus comprises large area of lateral parietal lobe

15

tf parts of CN 7 and 11 travel with trigeminospinal tract

f

7 and 9

16

Tf

all aff. cell bodies located withing trigeminal ganglion except Propioceptive inputs

T

17

---- ---- of CN5 is only case where primary sensory cell bodies located within CNS rather than ganglion

MEsencephalic nucelus

18

Pain and temp

ventral trigeminothalamic tract

A and C fibers

19

1 st order neurons of Pain and Temperature

trigeminal ganglion--> axons descend in spinal trigeminal tract and synapse with spinal trigeminal nucleus

20

2nd order neuron of Pain and Temp

from spinal trigeminal nucleus, ascend and cross over to contralateral VPM

21

3rd order neuron of pain/ temp

From VPM project via post limb of post capsule to face area of somatosensory cortex

22

trigeminal ganglion (main sensory nucleus of CN5)

1st order neuron of touch and pressure

23

principal sensory nucleus of CN5 project to ips VPM(doesn't cross over)

2nd order neuron of touch and pressure

24

VPM projects through post. int. capsule to face area of somatosensory cortex

Touch and pressure 

(3rd order neuron)

25

spinocerebellar tract

propioception 

a alpha fibers(stretch and tendon receptor in muscles of matication)

26

Propioception of CN5

1st order neuron; af. pass the -------- ganglia(nill synapse)

2nd order neuron; ----- nucelus(in CNS),------ nucleus(create reflex arc)

3rd order neurons; -------

1st order neuron; af. pass the trigeminal ganglia(nill synapse)

2nd order neuron; mes. nucelus(in CNS),motor nucleus(create reflex arc)

3rd order neurons; cerebellum

27

Q image thumb

A image thumb
28

ant hlf of ext ear canal and facial surface of upper part auricle

uricultemporal nerve(V3)

29

post half of ext ear canal

auricular br of vagus nerve

30

> auricular nerve (c2,3)

inf. auricle(a and P)

31

< occipital nerve(c2,3)

cranial surface of upper auricle

32

corneal reflex if stim. right eye

Left Rv1 neither eye blinks

Lesion L V1 bilateral blink

33

corneal reflex 

Lesion R CN7 only

left eye blinks

34

Lesion L Cn7 

only right eye blinks

35

lesion of Lev. palpebrae(CN3)

ptosis(keeps eyelid open)

36

orb oris(cn7)

close eyelid

37

lesion of Cn7 for orb oris

inability to close eyelid 

no corneal reflex

38

Divison V1,2,3 of sensory

deficits along distribution 

(pain, temp., touch , propioception, pressure)

39

Motor

V3 only lesion

temporalis and masseter muscle

ips open bite and weakness of jaw closure

 

pterygoid m; weakness of jaw opening

deviation to ips side on opening

--> diminished loss of reflexes

40

corneal reflex

touch cornea with cotton cause both eyes to close

41

afferent V1

efferent Cn7

corneal reflex

42

corneal reflex

cornea

main sensory nucleus of trigeminal

medial long. fasciculus

main motor nucleus of facial nerve

orb oris muscle

cause ips.(direct) and contralat.(indirect) eye blink

43

jaw jerk reflex

mouth open and relaxed 

tap chin to get contraction mouth closure

44

V3 propioceptive-afferents

V3- motor - efferents

jaw jerk reflex

45

reflex lost only with bilateral CN5 lesion

jaw jerk lesion

46

Cn7

Pons(origination)

enter IAM

pass thru facial canal

exits skull thru stylomastoid 4amen

course parotid gland

motor br

47

Q image thumb

A image thumb
48

 

secretomotor of facial nerve

lac gland

submand gland

sublingual gland

49

special sense of CN 7

ant 2/3 tongue

floor of mouth

palate

50

upper face recieve bilateral innervation

lower face recieves unilateral innerv

muscle of facial expression, post belly digastric, stylohyoid m.

stapedius

main motor nucleus

51

sup salivatory nucleus

submand and sublingual nucleus

52

nucleus of solitary tract

mediates taste

53

orb oris

wistle

pull lips against teeth 

protrude lips

54

origin; circumoral muscles, maxilla, mandible

i

orb oris

55

insertion ; lips and skin of lips

orb oris

56

origin;mand oblique line

dep. anguli oris

57

insertion angle of mouth

dep anguli oris

zyg major

risorius

58

origin ; zyg bone

zyg major

59

origin - parotid and massateric fascia

risorius

60

frown and pull down angle of mouth

dep. anguli oris

61

smile pull angle of miuth up and back

zyg major

62

smile pull angle of mouth laterally

risorius

63

close eye

orb oculi

64

buccinator origin

alv. process of maxilla and mandible

pterygomand raphae

65

buccinator insertion

orb oris

66

buccinator

hold food on occl. table

tense cheek(blow, wistle)

67

food/ saliva fall b/n teeth and cheek

buccinator

68

insert to neck of stapes

stapedius

69

dec. vibration of stapes)dec. perception of sound)

stapedius

70

paralysis of buccinator

food saliva b/n teeth and cheek

71

paralysis of stapedius

hypercusis

72

lower motor neuron

- corneal reflex

ips paralysis/ weakness of upper and lower face

73

contralateral lower face weakness only

upper motor neuron lesion

74

dec taste 

hyperacussi

dec salivation on affected side

if lesion prox to > petrosal and CT take off

(LMN)

75

contralateral lower face weakness only

upper motor neuron lesion

76

with central lesion to facial motor nucleus

 

 

one still riase eyebro on affected side b/c of bilat innervation to muscles of upper face

77

> petrosal nerve

cell body at ---- sal. nucelus

nerve arise at ----- ------

join ----- ------ nerve

exits cranium via ------- -------

enter ------ --------

nerve of pterygoid canal synapse in ------ -------

cell body at sup sal. nucelus

nerve arise at gen. ganglion

join deep petrossal nerve

exits cranium via famen lacerum

enter pterygoid canal

nerve of pterygoid canal synapse in pterygopalatine ganglion

78

compontents of > petrosal nerve

autonomic to

lac gland

glands of mucus membrane of nasal cavity, pharynx, palate

 

79

compontents of > petrosal nerve

PS preganglion

synapse at gen ganglion 

80

sympathetics of > pet nerve

pass thru geniculate w/o synapse

81

taste of > pet nerve

from palate via palatine nerve

taste fibers pass through pterygopalatine ganglion travel with nerve of pterygoid canal

reaches > petrosal nerve

82

CN 8 course

1. located within temporal bone innervate 

cochlea

semiciruclar canal and maculae

2. passes IAM

3. into brain stem at junction pons and medulla, fibers terminate in 

a. cochlea nucelus

b. vestibulat nucleus complex

83

ext ear

-->recieve sound wave

auricle 

ext. aud. canal

84

mddle ear

tympanic cavity

85

3 ossicles

2 muscles

MIS

stapedius, tensory tympani

86

upper motor nucleus recieves

upper motor neruons from both sides of motor on face

A image thumb
87

lower part of facial motor nucleus

recieve upper motor neurons from contralat motor area

A image thumb
88

pons

nucleus of faceial nerve

89

weakness of right lower facial muscles

lesion of left corticobulbar fiber(upper motor neuron)

90

lesion to right faacial nerve

weakness of right upper and lower facial muscle.