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NBDE anatomy > page 128- 137 > Flashcards

page 128- 137 Flashcards

1
Q

floor of mouth

ant 2/3 tongue

land lingual ging.

A

ling. nerve supply

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2
Q

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 —- ——

A

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

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3
Q

chorda tympani contributes

A

pregang PS fibers to submand ganglion

taste fibers of ant 2/3 tongue

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4
Q

4 paired nuclie

(M and S)

A

trigeminal nuclei

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5
Q

motor nucleus

A

lateral pons

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6
Q

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

A

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

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7
Q

Sensory nucleus

A

Pons

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8
Q

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 —— ——– ——–

A

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

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9
Q

Spinal trigeminal nucleus

A

midpons to cervical cord

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10
Q

spi. tri. nucleus

——/—— from face travel to —— ——— nucleus

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

A

Pain/ temp from face travel to spinal trigeminal nucleus

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

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11
Q

mesencephalic nucleus

A

upper pons midbrain border

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12
Q

propioceptic inputs not located with trigeminal ganglion

propioceptive inputs synapse in ——–

A

Mesencaphelic nucleus

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13
Q

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

A

CN 5 sensory

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14
Q

CN5

from the —- ——(VPM or VPL)

info relays to ——– cortex(area3,1,2)

—– segment of sensory homunculus comprises large area of lateral parietal lobe

A

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

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15
Q

tf parts of CN 7 and 11 travel with trigeminospinal tract

A

f

7 and 9

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16
Q

Tf

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

A

T

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17
Q

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

A

MEsencephalic nucelus

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18
Q

Pain and temp

A

ventral trigeminothalamic tract

A and C fibers

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19
Q

1 st order neurons of Pain and Temperature

A

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

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20
Q

2nd order neuron of Pain and Temp

A

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

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21
Q

3rd order neuron of pain/ temp

A

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

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22
Q

trigeminal ganglion (main sensory nucleus of CN5)

A

1st order neuron of touch and pressure

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23
Q

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

A

2nd order neuron of touch and pressure

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24
Q

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

A

Touch and pressure

(3rd order neuron)

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25
Q

spinocerebellar tract

A

propioception

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

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26
Q

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; ——-

A

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

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27
Q
A
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28
Q

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

A

uricultemporal nerve(V3)

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29
Q

post half of ext ear canal

A

auricular br of vagus nerve

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30
Q

> auricular nerve (c2,3)

A

inf. auricle(a and P)

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31
Q

< occipital nerve(c2,3)

A

cranial surface of upper auricle

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32
Q

corneal reflex if stim. right eye

A

Left Rv1 neither eye blinks

Lesion L V1 bilateral blink

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33
Q

corneal reflex

Lesion R CN7 only

A

left eye blinks

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34
Q

Lesion L Cn7

A

only right eye blinks

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35
Q

lesion of Lev. palpebrae(CN3)

A

ptosis(keeps eyelid open)

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36
Q

orb oris(cn7)

A

close eyelid

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37
Q

lesion of Cn7 for orb oris

A

inability to close eyelid

no corneal reflex

38
Q

Divison V1,2,3 of sensory

A

deficits along distribution

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

39
Q

Motor

V3 only lesion

A

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
Q

corneal reflex

A

touch cornea with cotton cause both eyes to close

41
Q

afferent V1

efferent Cn7

A

corneal reflex

42
Q

corneal reflex

A

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
Q

jaw jerk reflex

A

mouth open and relaxed

tap chin to get contraction mouth closure

44
Q

V3 propioceptive-afferents

V3- motor - efferents

A

jaw jerk reflex

45
Q

reflex lost only with bilateral CN5 lesion

A

jaw jerk lesion

46
Q

Cn7

A

Pons(origination)

enter IAM

pass thru facial canal

exits skull thru stylomastoid 4amen

course parotid gland

motor br

47
Q
A
48
Q

secretomotor of facial nerve

A

lac gland

submand gland

sublingual gland

49
Q

special sense of CN 7

A

ant 2/3 tongue

floor of mouth

palate

50
Q

upper face recieve bilateral innervation

lower face recieves unilateral innerv

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

stapedius

A

main motor nucleus

51
Q

sup salivatory nucleus

A

submand and sublingual nucleus

52
Q

nucleus of solitary tract

A

mediates taste

53
Q

orb oris

A

wistle

pull lips against teeth

protrude lips

54
Q

origin; circumoral muscles, maxilla, mandible

i

A

orb oris

55
Q

insertion ; lips and skin of lips

A

orb oris

56
Q

origin;mand oblique line

A

dep. anguli oris

57
Q

insertion angle of mouth

A

dep anguli oris

zyg major

risorius

58
Q

origin ; zyg bone

A

zyg major

59
Q

origin - parotid and massateric fascia

A

risorius

60
Q

frown and pull down angle of mouth

A

dep. anguli oris

61
Q

smile pull angle of miuth up and back

A

zyg major

62
Q

smile pull angle of mouth laterally

A

risorius

63
Q

close eye

A

orb oculi

64
Q

buccinator origin

A

alv. process of maxilla and mandible

pterygomand raphae

65
Q

buccinator insertion

A

orb oris

66
Q

buccinator

A

hold food on occl. table

tense cheek(blow, wistle)

67
Q

food/ saliva fall b/n teeth and cheek

A

buccinator

68
Q

insert to neck of stapes

A

stapedius

69
Q

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

A

stapedius

70
Q

paralysis of buccinator

A

food saliva b/n teeth and cheek

71
Q

paralysis of stapedius

A

hypercusis

72
Q

lower motor neuron

A
  • corneal reflex

ips paralysis/ weakness of upper and lower face

73
Q

contralateral lower face weakness only

A

upper motor neuron lesion

74
Q

dec taste

hyperacussi

dec salivation on affected side

A

if lesion prox to > petrosal and CT take off

(LMN)

75
Q

contralateral lower face weakness only

A

upper motor neuron lesion

76
Q

with central lesion to facial motor nucleus

A

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

77
Q

> petrosal nerve

cell body at —- sal. nucelus

nerve arise at —– ——

join —– —— nerve

exits cranium via ——- ——-

enter —— ——–

nerve of pterygoid canal synapse in —— ——-

A

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
Q

compontents of > petrosal nerve

A

autonomic to

lac gland

glands of mucus membrane of nasal cavity, pharynx, palate

79
Q

compontents of > petrosal nerve

A

PS preganglion

synapse at gen ganglion

80
Q

sympathetics of > pet nerve

A

pass thru geniculate w/o synapse

81
Q

taste of > pet nerve

A

from palate via palatine nerve

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

reaches > petrosal nerve

82
Q

CN 8 course

A
  1. located within temporal bone innervate

cochlea

semiciruclar canal and maculae

  1. passes IAM
  2. into brain stem at junction pons and medulla, fibers terminate in
    a. cochlea nucelus
    b. vestibulat nucleus complex
83
Q

ext ear

A

–>recieve sound wave

auricle

ext. aud. canal

84
Q

mddle ear

A

tympanic cavity

85
Q

3 ossicles

2 muscles

A

MIS

stapedius, tensory tympani

86
Q

upper motor nucleus recieves

A

upper motor neruons from both sides of motor on face

87
Q

lower part of facial motor nucleus

A

recieve upper motor neurons from contralat motor area

88
Q

pons

A

nucleus of faceial nerve

89
Q

weakness of right lower facial muscles

A

lesion of left corticobulbar fiber(upper motor neuron)

90
Q

lesion to right faacial nerve

A

weakness of right upper and lower facial muscle.

NBDE anatomy (23 decks)

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