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Flashcards in page 138-147 Deck (86):
1

membranous and bony labyrinth

inner ear

2

acoustic apparatus

vestibular app

semicircular canal

inner ear

3

muscles of middle ear to dampen sound 

tensor tympani

stapedius

4

paralysis of muscle of middle ear

hyperacusis

5

V3;CN7

tensor tympani; stapedius

6

middle ear to pharynx

eustacian tube

7

equalize pressur b/n tympanic cavity and nasopharynx

eustacian tube

8

Hearing loss

presbycusis

9

loss occuring gradually with aging b/c of changes in inner ear or middle ear

presbycusis

10

conductive loss

thickening and stiffening of cochlear basilary membrane

11

sensorineural loss

loss of hair and or nerve cells

12

nystagmus

involuntary rapid and repetitive movements of eyes

13

irritation to labyrinth 

vestibular nerve or nuclei

cerebellum

visual system

cerebral cortex

nystagmus

14

rhythmic oscillations are slow to one side

and rapid to other

nystagmus

15

defined by direction of rapid reflex movement

nystagmus

16

vertical , occasional vertical or rotary

nystagmus

17

cold caloric test

instill h2o to EAM stimulates nystagmus

18

colc caloric test

cool water fast component to side opposite

warm waterfast component to stimulated side

19

Cn 9 glossopharyngeal

originates in ant surface of medulla oblongata

pass lateral in pcf

leaves skull via jug foramen

20

motor of CN9 

 

stylopharyngeus

21

general sensory cell bodies of CN 9 are

sup and inf ganglion of CN9 

22

mucosa of pharynx

post 3rd of mouth

sensory of CN 9

23

visceral sensory 

taste on post 3rd of tongue

gag reflex

chemo, baroreceptors- carotid body, sinus

24

PS/ secromotor

parotid via otic ganglion

25

preganglion of PS CN 9

leave glossopharyngeal narve as tympanic nerve

enter middle ear caivty

contribute to tympanic plexus

reform as lesser petrosal nerve

leave cranial cavity via 4amen ovale

enter otic ganglion

26

post gang of PS secromotor

carried by auricultemporal nerve to parotid glandn 

27

widest distribution CN

CN 10

28

supply viscera of kneck,

thorax, abd

to left colic felxure

CN X

29

course of vagus

leave medulla

pass jug foramen

desc. kneck in carotid sheath

Post mediastinum

enter abd cavity with esophogus

30

right vagus course

cross ant surface of r. rubclavian art

enter thorax posterolat to BC trunk, lat 2 trachea,medial to azygous vein

 

pass post to root of right lung

travels with esophogus

enters abd behind esophogus

post vagal trunk

31

left vgus nerve

enter thorax in front of L. subclavian art. behind L. braciocephalic vein

cross left side of aortic arch

pass behind left lung

travels with esophogus

enters abd in front of esophogus

br of esophogeal plexus unite

Ant vagal trunk

32

br of vagus

menineal

to dura

33

auricular br of Vagus

to auricle and post 1/2 of EAM

34

form pharyngeal plexus

pharyngeal br of vagus

35

muscle of pharynx and muscle of soft palate

pharyngeal br of Vagus

36

travels with sup laryngeal art

sup laryngeal br of vagus

37

internal lryngeal nerve

pierce thyrohyoid membrane

38

ext laryngeal nerve

supplies mucus membrane of larynx above vocal fold

travels with sup thyroid art

supplie cricothyroid m.

39

cn x lesion

loss of gag reflex

dysphagia

dysphonia

PS disturbances

40

CN11 lesion

paralysis of SCM; hard to turn head to contralat side

41

paralysis of trapezius; shoulder droop

CN 11 lesion

42

strictly motor

hypoglossal nerve

43

leaves skull through hypoglosal canal

joined by C1 fibers from cervical plexus after leaves skull

passes hyoid bone on lat surface of hyoglossus m

loops around occipital art

passes b/n ECA and IJV

course of CN12

44

CN12 lesion LMN lesion

tongue deviatex to side of lesion

45

UMN CN 12 lesion 

tongue deviates away from side of lesion

46

in spinal canal and 40-45 cm long

spinal cord

47

continuation of med oblongata and

exits 4amen magnum

spinal cord

48

extends to L1-2

occupies upper 2/3 of vert column

Spinal cord

49

conus medularis

spinal cord taper at L1

50

filum terminales

prolong of pia mater at apex 

attaches to coccyx

51

where dura and arachnoid fuse at S2

filum terminale

52

cauda equina

nerve root extending down below end of spinal cord

exits via lumbar and sacral forammina

53

meninges 

dura 

arachnoid

pia

54

spinal cord cross section

gray mater; located centrally, h shaped

consists of unmy. nerve cell bodies

55

ant ventral horn

gray mater

56

post dorsal horn

sensory 

dorsal root ganglion(cell bodies)

57

intermediolateral horn

autonomic

58

surround the graymattter peripherally

myelinated axon

 

white matter

59

central canal  

filled with CSF

60

ant spinothalamic tract; lat spinothalamic tract

touch pressure, pain temp

61

post column(Gracilus and cuneatus)

propioception ,positon sense

62

spinocerebellar

motor coordination, propioception

63

descending /motor corticospinal traact

Motor

64

tectospinal tact

motor

65

movement of head

tectospinal tract

66

muscle tone, posture , head, neck, UE

rubrospinal tract

67

equilibirum

vestibulospinal tract

68

reticulospinal tract

muscle tone, sweat gland function

69

CN 

12; leave brain and pass skull 4amen

70

spinal nerve

31

leave spinal cord and pass out via intervert. 4amen

71

cerv

thoracic

lumbar

sacral

coccygal

8

12

5

5

1

72

ass plexi and ganglia

PNS

73

aff eff

somatic and viscera

PNS

74

from cutaneous and propioceptive receptors

somaic sensory (AFFERent)

 

75

visceral sensory 

from viscera

76

Efferent

motor neuron to skeletal muscles(somatic motor)

77

visceral motor

autonomic(PS> S) to viscera

78

spinal nerve

dorsal and ventral rami

79

mixed nerve(motor sensory)

spinal nerve

80

after join as spinal nereve , split into 

dorsal and ventral rami

81

spinal nerve 

supply motor and sensory innervation to Post and Ant body wall

82

location of cell body in spinal cord

motor nerve and ventral root

83

location of cell body 

dorsal root ganglia

Dorsal root

sensory spinal nerve

84

bundle of nerve fibers

peripheal nerve

85

formed from 1+ spinal nerve

peripheal nerve

86

musculocut nerve

peripheal nerve

formed from C5-7