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Flashcards in Eyes And Ears Deck (204):
1

apex of the orbital cavity is perforated by

optic foramen
SOF

2

superior orbital margin

frontal bone + sphenoid lesser wing

3

Inferior orbital amrgin

Zygoma + maxilla

4

Medial orbital margin

Process of frontal and maxilla

5

Lateral orbitla margin

Process of frontal and zygoma

6

Roof of orbital wall

Orbital plate frontal bone

7

Lateral orbital wall

Zgyoma and sphenoid greater wing

8

Floor orbital wall

orbital plate of maxilla

9

Medial orbital wall

Maxilla
Lacrimal
Ethmoid
Sphenoid

10

Formed by lacrimal + ethnoid bone

Lamina papyracea

11

The lamina papyracea forms the what

Lateral wall of ethmoid air cells

12

The nasolacrimal canal transmits

nasolacrimal duct

13

The inferior orbital fissure transmits the

Maxillary nerve (zygo branch)
Sympa nerves
Inf ophth vein

14

The superior orbital fissure transmits the

Oculo cn3
trochlear cn4
Abducent cn6
Sup ohpth vein

15

Optic canal transmits the

Ophth artery
Optic nerve

16

Clinical singificance in inf orb fissure

Cavernous sinus thrombosis

17

Entrance into the conjuctival sac, elliptical opening betwen the eyelids

Palpebral fissure

18

Sebaceous glands that open directly into eyelash follicles

Glands of Zeis

19

Ciliary glands, modified sweat glands opening between adjacent eyelashes

Molls

20

Modified sebaceous, ehich pour secretions into lid amrgin preventing overflow of tears

Tarsal/Meibonian glands

21

Thin mucous emmbrane lining the eylods

Palpebral conjuctiva

22

Epithelium continuous with the cornea

Bulbar conjunc

23

Arching folds connecting the conjuctival membrane inside the yelid with the eyeball

Fornix

24

Potential space that open into the palpebral fissure

Conjuctival sac

25

Small space that separates the eyeball to the medial angle of eye

Lacus lacrimalis

26

Small reddish elevation at the center of the lacus alcrimalis

Caruncula lacrimalis

27

Reddishs emilunar fold on the lateral side of the caruncula

Plica semilunaris

28

Small elevation of the eye projects into lacus

Papilla lavrimalis

29

Small hole on the summit of the pailla that leads into canaliculi lacrimalis

Carry tears to nose

punctum lacrimalis

30

Fibrous sheath attached to periosteum at the orbital margins

Orbital septum

31

Thickening of the orbital septum at the margins of the lids

Tarsal plates

32

Attached to bony tubercle within the orbital margin

Lateral palpebral ligament

33

Attached to crest of lacrimal bone

Medial palpebral ligament

34

Tarsal galnds are embedded where

Posterior surface of tarsal plates

35

Palpebral fibers covering the superf surface of the tarsal plates and setpum

Closes eyelids

Orbicularis oculi

36

parts of the orbicularis oculi

palbpebral
orbital

37

the aponeurosis of insertion pierces orbital septum to reach anterior surface of superior tarsal plates and skin

opens the eyelids

levator palpebrae superioris

38

infections of hair follicle/sebaceous glands

hordeolum (stye)

39

eye nodules, caused by tarsal gland ifnections, surgically removed

chalazion

40

presence of orbital cellulitis is secondary to

ethmoiditis

41

gland that produes tears

lacrimal gland

42

the lacrimal gland opens into the lateral part of superior fornix by how many glands

12

43

the lacrimal gland is divided or separated into 2 parts by the

aponeurosis of the levator palpebrae

44

flow of tears

lacrimal glands > superior fornix > lacus lacrimalis > puncta lacrimalis > canaliculus lacrimalis > lacrimal sac > nasolacrimal duct > inferior nasal meatus

45

art supply of lacrimal gland

lacrimal artery

46

NS of lacrimal gland

lacrimal nerve branch of ohpthalmic of trigeminal

47

sympathetic postganglionic nerve supply of the lacrimanl gland

internal carotid plexus

48

prevents air from being forced up into the duct when blowing nose

lacrimal fold

49

common origin of rectus muscles

tendon of Zinn

50

NS of superior, inferior and medial rectus muscle

occulomotor (CN3)

51

NS of lateral rectus muscle

abducent CN6 LR6

52

NS of superior oblique muscle

trochlear (CN4) SO4

53

NS of inferior oblique muscle

occulomotor CN3

54

action of sup oblique

downward lateral

55

action of inferior oblique

upward lateral

56

the fibrous coat of the eye is composed of

sclera
cornea

57

part of sclera that is piered by the optic nerve and fused with the dura of the nerve

lamina cribrosa

58

veins in the eyes are called

venae vorticosae

59

point of communication of the sclera and cornea

corneoscleral junction (limbus)

60

innervation of cornea

long ciliary nerves from ohpthalmic of trigeminal

61

provides oxygen and nourishment to outer retinal layers

choroid

62

membrane separating the choroid from the retina's inner pigmented layer

Bruch's membrane

63

shallow grooves of the ciliary ring

ciliary striae

64

produces aqueous humor

ciliary process

65

the ciliary process is connected to the

suspensory ligaments (Zonular ligament)

66

ciliary muscles

meridianal
circular

67

NS of ciliary muscle

parasym - CN3
postgang - short ciliary nerve

68

action of the ciliary muscles

pull ciliary body forward
release tension of the zonular ligament to increase RI

69

thin, contractile pigmented diaphragm with a central aprture (pupil)

iris

70

the iris divides the eye space into

anteriro and posterior chamber

71

the iris is connected to the ciliary body at the

level of limbus

72

muscles of iris and action

circular
radial

dilation and constriction

73

para NS of sphincter pupillae

oculo

74

postgang of sphincter pupillae

short ciliary

75

sympa NS of dilator pupillae

long ciliary nerves

76

layers of the choroid

outer pigmented
inner vascular

77

layers of the retina

outer pigmented
inner nervous

78

wavy ring at anterior edge of the retina where enrvous tissue ends

ora serrata

79

the receptive portion of the retina

posterior 3/4

80

ocal yellowisharea at the center of the posterior part of the retina, area for most distinct vision

macula lutea

81

central depression in the poster 3/4 of the retina

fovea centralis

82

entry of optic nerve in the retina, blind spot, insensitive to light

optic disc

83

contents of the eyeball

aqeous humor
vitreous humor
lens

84

where is aqueous humor found

anterior and osterior chamber of eyeball

85

the aqeous humor flows from the psoterior chamber into the posterior chamber via the

pupil

86

the aqueous humor is drained througgh the spaces at ____ into the ____

iridocorneal angle
canal of Schlemm

87

an obstruction to the drainage of the aqueous humor will cause rise in intraocular pressure and lead to

glaucoma

88

the aqueous humor removes products from the __ and ___

lens
cornea

89

flow of aqueous humor

ciliary body > cleft of posterior chamber > pupil > anterior chamber > trabecular meshwork > Schlemm @ iridocorneal angle

90

fills area behind lens

vitreous body

91

narrow channel running through the vitreous body from the optic disc to the posterior surface of the lens

hyaloid canal

92

in birth, the hyaloid canal is filled by

hyaline artery

93

nearsightedness

myopia

94

transparent, biconvex structure enclosed in a transparent capsule

lens

95

The lens consists of

Elastic capsule
Cuboidal epithelium
Lens fibers

96

Makes up the bulk of the lens

Lens fibers

97

condition where lens become denser and less elastic, less accommodation

Presbyopia

98

In bright light what happens

contract pupil become smaller

99

Sa close objects what happens

Ciliary muscle contract and pull ciliary bosy forward inward

100

collects air vibrations

auricle

101

the extrinsic and intrinsic muscles of the auricle is supplied by what nerve

facial

102

portion of EAM with hair , sebaceous and ceruminous glands

outer 1/3 cartilaginous protion

103

modified sweat glands that secrete yellowish brown wax

ceruminous glands

104

bony framework in the EAM formed by the tympanic plate

inner 2/3

105

NS sensory of the skin lining the ext. ear

auriculotemporal
auricular from vagus

106

the middle ear is an air-containing cavity in where

petrous part of temporal bone

107

parts of the temporal bone

mastoid
squmous
tympanic
petrous
int. auditory canal

108

the middle ear contains what that transmits vibrations of the tympanic membrane to the perilymph of the int. ear

auditory ossicles

109

the auditory ossicles transmit vibrations from

tympanic membrane to perilymph

110

part of the middle ear that is approxiamtely parallel to the tympanic membrane

long axis

111

the middle ear communicates with what in front and what behind

eustachian tube (nasopharynx)
mastoid antrum

112

two labyrinths in the inner ear

bone
membranous

113

the channel connecting the mastoid antrum to the middle ear

aditus ad antrum

114

the mastoid contains what cells

air cells

115

the largest air cell in the amstoid

mastoid antrum

116

the part of the temporal bone that makes up the floor of the EAC

tympanic

117

the hardest aprt of the temporal bone

petrous

118

parts of the auricle

helix
antihelix
scapha
crura

119

primary otalgia involves

the ear itself

120

secondary referred otalgia involves

CN 1 9 7 5

121

parts of the tympanic membrane

pars falccida
pars tensa

122

things seen in the tympanic membrane

manubrium of malleus
umbo
cone of light
incus

123

which portion of the EAM is prone to infection

outer 1/3

124

hearing loss involving the outer and middle ear is

conductive hearing loss

125

hearing loss involving the inner ear is

sensorineural

126

the superior deficiency of tympanic ring

notch of rivinus

127

what is attached in the notch of rivinus

pars flaccida

128

conditon na small pinna

microtia

129

condtiion na no canal

atresia

130

condition na no pinna

anotia

131

conditon na narrowed canal

stenosis

132

undrained hematoma in the auricle may lead to

cauliflower ear

133

common site where foreign shit is lodged

isthmus

134

layers of the tympanic membrane

outer squamous
middle fiber
inner mucous

135

roof of the middle ear

tegmen tympani

136

the tegmen tympani is part of what bone

petrous

137

the the floor of the middle ear separates the middle ear from

IJV

138

the anterior wall of the middle ear seaprates the tymapnic caity from the

ICA

139

the openings of the anterior wall of middle ear opens into where

lower larger - auditory tube
upper smaller - canal for tensor tympani

140

the posterior wall of the middle ear contains

vertical facial nerve
tendon of stapedius muscle
aditus

141

the only membranous wall of the middle ear

lateral wall

142

the lateral wall of the middle ear contains

tympanic mambrane with the chrorda tympani

143

closed by the stapes

oval window/fenestra vestibule

144

closed by the scond tympanic membrane

round window/fenestra cochlea

145

the medial wall or labyrinth of the middle ear contains

horizontal facial

146

pulley which the tendon of the tensor tympani bends laterally to reach insertion on the handle of the malleus

processus cochleariformis

147

rounded projection in the medial wall of the middle ear

promontory

148

small hollow conical projection in the posterior wall of the middle ear

pyramid

149

small depression at the depth of the concavity of the tympanic membrane

umbo

150

small triangular area on the tympanic membrane bounded by the folds

pars flaccida

151

remainder of the membrane that is tense

pars tensa

152

bound down to inner surface of the tympanic membrane by the mucous membrane

handle of the malleus

153

the tympanic memrbane is extremely senstive to

pain

154

the hypotympanum corresponds to the

eustachiaan tube

155

boneossicle with head, neck no body

malleus

156

ossicle with body no head

incus

157

ossicle with head, limbs and base

stapes

158

head of the malleus articulates with the

incus

159

the handle of the malleus is firmly attached to

medial surface of eardrums

160

istapes head + lenticular process of incus forms

incudostapedial joint

161

part of the stapes that closes the oval window

footplate

162

part of the stapes that receives isnertion of the stapedius muscle

neck

163

action of the ossicle muscles

dampens vibrations of

eardrums - tensor tympani
stapes - stapedius

164

as the eustachian tube desceds, it passes over the upper border of what

superior constrictor border

165

purpose of eustachian tube

equalizes pressure bet. tympanic cavity and nasopharynx

166

NS of tensor tympan9i

mandibular branch trigeminal

167

NS of stapedius

facial

168

insertion of tensor tympani

handle of mlleus

169

origin of stapedius

pyramid in posterior wall of middle ear

170

3 pats of the inner ear

cochlea
vestibule
canals

171

clear fluid where memrbranoius labyrinth is suspended

perilymph

172

central part of the labyrinth

vestibule

173

vestibule contains what

saccule
utricle

174

semicircular canals open into

posterior part of vesetibule

175

swelling at the end of each canala

ampulla

176

found within the canals

semicircular ducts

177

orientation for vertical direction

saccule

178

orientation for horizontal direction

utricle

179

opens into the anterior part of the vestibule

cochlea

180

which part of cochlea is for low frequency

apex

181

which part of cochlea is for high freuqncy

base

182

perforated by the branches of the cochlear nerve

modiolus

183

winds around the modiolus, projects into the anterior of the canal and partially divides it

spiral lamina

184

membranes in the cochlea

reissner's
basilar

185

the only communication in apex of the cochlea between vestibuli and scala tympani

helicorema

186

main hearing organ

organ of Corti

187

main balance organ

macula

188

produces the perilymph

stria vascularis

189

which contains endolymph

scala media

190

separates scala vestibuli from media

reissner's

191

separates scala tympani from media

basilar membrane

192

electrolyte content of bony labyrinth

high sodium
low potassium

193

electrolye content of membranous labyrinth

high potassium
low sodium

194

only part of the ear with double innervation

saccule

195

NS of the saccule

sup and inf vesdtibular nerve

196

which sac of the vestibule is larger

utricle

197

saccule and utricle are for ___ motion while the canals are for __ motion

linear
angular

198

connects the cochlea into the saccule

ductus reuniens

199

the organ of corti lies in the

basilar membrane

200

the vestibulocochlear nerve is found where

bottom of internal acoustic meatus

201

the vestibular nerve expanded to form the

vestibular ganglion

202

the vestibular nerve supplies

utricle
saccule
ampulla of canals

203

the cochlear nerve enters the foramina where

base of the mdoiolus

204

immediate n of the corti

peripheral branches of the sensory ganglion of the cochlear nerve