Quiz 8 (Eye + Ear) Flashcards Preview

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Flashcards in Quiz 8 (Eye + Ear) Deck (123):
1

Pathway of lacrimal fluid

lacrimal gland
excretory ducts
medially across eye
lacrimal puncta
lacrimal canals
lacrimal sack
nasolacrimal duct
nasal cavity

2

Lacrimal gland is normally innervated by

facial nerve during normal levels of production

3

lacrimal gland is innervated by this nerve when crying

opthalmic branch (CN 5)

4

Another name for palpebrae

eyelids

5

palpebrae

keep the eye lubricated
protect the surface of the eye

6

deep to the subcutaneous layer of eyelids, board sheets of connective tissue

tarsal plates

7

Type of tissue composing the conjunctiva

nonkeratinized stratified squamous epithelium

8

Covers inner surface of eyelids

palpebral conjunctiva

9

covers outer surface of the anterior surface of the eye

ocular/bulbar conjuctiva

10

muscle around the eye (circular muscle)

orbicularis oculi

11

innervation of the orbicularis oculi

facial nerve

12

focuses the visual image on the retinal photoreceptors

lens

13

this covers the lens

dense, fibrous capsule covers the entire lens

14

Lacrimal apparatus consists of the following

lacrimal gland
lacrimal puncta
lacrimal canals (canaliculi)
lacrimal sac
nasolacrimal duct

15

pocket created where the conjunctiva of the eyelid connects with the eye is known as

Fornix

16

The lacrimal gland resides here

a depression in the frontal bone within the orbit and superior and lateral to the eyeball

17

superior and inferior, drain the lacrimal lake, empty into lacrimal canaliculi

lacrimal puncta

18

run along groves in the lacrimal bone, lead to lacrimal sac

lacrimal canals (canaliculi)

19

fills the lacrimal groove of the lacrimal bone

lacrimal sac

20

extends along the nasolacrimal canal, formed by the lacrimal bone and the maxilla

nasolacrimal duct

21

orbicularis oculi: A and N

closes eyelids and draws eyebrows inferiorly
facial

22

levator palpebrae superioris: A and N

Blinking muscles, elevates eyelid
oculomotor nerve

23

Superior rectus: A and N

Moves the eye superiorly. slight medial movement
oculomotor nerve

24

inferior rectus: A and N

Moves the eye inferiorly. slight medial movement
oculomotor nerve

25

Medial rectus: A and N

moves the eye medially
oculomotor nerve

26

lateral rectus: A and N

moves the eye laterally
abducens

27

inferior oblique: A and N

slight lateral movement of the eye
oculomotor nerve

28

superior oblique: A and N

slight lateral movement of the eye
trochlear nerve

29

How to ID the position of the eye

inferior oblique is connected directly to the lateral side of the eye and wraps around the bottom of the eye medially
superior oblique is connected to the eye via a tendon and wraps around the top of the eye medially

30

trochlea

fibrocartilage, allows superior oblique muscle to act as a pulley

31

Pathway of aqueous humor

starts in the ciliary processes
posterior chamber of the anterior cavity
through pupil
anterior chamber of the anterior cavity
canal of Schlemm
drains into blood stream

32

Accommodation: Lens, close

Thick

33

Accommodation: Lens, far

thin/flat

34

Accommodation: ciliary muscle, close

contracted

35

Accommodation: ciliary muscle, far

relaxed

36

Accommodation: suspensory ligaments, close

not tense/loose

37

Accommodation: suspensory ligaments, far

tense

38

Fibrous tunic is made of

cornea
sclera

39

anterior aspect of eye, transparent, allows light into eye

cornea

40

refracts light as it enters the eye

cornea

41

Whites of eye, muscular attachment to eye, fierous connective tissue, gives eye form

sclera

42

vascular tunic AKA

Uvea

43

main parts of the vascular tunic

choroid (coat)
iris
pupil
ciliary body
suspensory ligaments

44

pigmented layer of the eye, melanocytes produce melanin

choroid (coat)

45

colored part of the eye, muscular

iris

46

muscles of tye iris

pupillary dilators
pupillary constrictors

47

radial muscles of the eye

pupillary dilators

48

circular muscles of the eye

pupillary constrictors

49

pupillary dilators do this

open pupil and allow more light into eye

50

pupillary constrictors do this

close pupil and allow less light into eye

51

hole in the middle of the eye

pupil

52

part of the eye that means little person

pupil

53

begins at junction between the cornea and sclera

ciliary body

54

structures of the ciliary body

ciliary muscles
ciliary processes

55

bulk of ciliary body, ring that projects into the interior of the eye

ciliary muscle

56

epithelium is thrown into numerous folds in this part of the vascular tunic

ciliary processes

57

how to say ciliary processes on the test

ciliary processes of the ciliary body

58

attached to ciliary processes and lens

suspensory ligaments (zonular fibers)

59

Main parts of the neural tunic

retina
macula lutea
fovea centralis
optic disc
anterior cavity
posterior cavity

60

inner most layer of the eye, consists of neural tissue and is an extension of the brain

neural tunic

61

contains photorecepetors, two layers

retina

62

two layers of the retina

neural retina and pigment layer

63

exact posterior of retina, contains no rods

macula lutea

64

highest visual accuity, highest concentration of cones

fovea centralis

65

highest visual acuity

fovea centralis

66

blind spot

optic disc

67

the optic disc consists of this

optic nerve and veins of eye leave at this location

68

area anterior to the lens

anterior cavity

69

cornea to iris

anterior chamber of the anterior cavity

70

iris to lens

posterior chamber of the anterior cavity

71

watery fluid that occupies the anterior cavity

aqueous humor

72

scleral venous sinus, aqueous humor passes through back into circulation at this point

canal of schlemm

73

the cana of schlemm is in this area of the eye

anterior cavity

74

another name for posterior cavity

vitreous chamber

75

posterior to lens

posterior cavity

76

gelatinous fluid that holds shape of the eye

vitreous humor

77

Most exterior structure of the ear

pinna / auricle

78

external ear structure that is just outside of the tympanic membrane

external auditory canal

79

Middle ear structures (5)

tympanic membrane (tympanum)
auditory ossicles
tensor tympani
stapedius
auditory (eustachian) tube

80

auditory ossicles 3

malleus
incus
stapes

81

Ear drum, barrier between external and middle ear

tympanic membrane (tympanum)

82

transfer vibrations from tympanic membrane to the perilymph of the scala vestibuli

auditory ossicles

83

lateral ossicle

malleus

84

middle ossicle

incus

85

medial ossicle

stapes

86

This middle ear muscle inserts on the handle of the malleus

tensor tympani

87

tensor tympani is innervated by

mandibular branch of trigeminal nerve (CN V)

88

This middle ear muscle inserts on the stapes

stapedius

89

innervation of the stapedius

facial nerve

90

communication between middle ear and nasopharynx

auditory (eustachian) tube

91

function of the auditory tube

equalizes pressure in the middle ear

92

bony labyrinth is filled with this

perilymph

93

anterior semicircular canal

'yes' movement

94

lateral semicircular canal

'no' movement (shake)

95

posterior semicircular canal

cartwheel movement (tilting)

96

contains the utricle and saccule

vestibule

97

snail shaped portion of inner ear associated with hearing

cochlea

98

part of the membranous labyrinth that contains the sensory receptors at the bases of the semicircular ducts (cristae) (A,L,P)

Amupullae

99

membranous labyrinth is filled with

endolymph

100

responsible for dynamic equilibrium

semicircular ducts

101

responsible for static equilibrium

utricle
saccule

102

membranous structure in the semicircular canals

semicircular ducts (A,L,P)

103

1 of membranous sacks that contain receptors contained in the vestibule,structure superior to the saccule

utricle

104

1 of membranous sacks that contain receptors contained in the vestibule,structure inferior to the utricle

saccule

105

horizontal acceleration

utricle

106

vertical acceleration

saccule

107

Slow vibrations produce this type of sound, and hits this area of the basilar membrane

deep sounds
distal

108

fast vibrations produce this type of sound, and hits this area of the basilar membrane

high pitch sounds
proximal

109

tonotopic organization

different sounds cause maximal vibration in different areas of the cochlea

110

ascending scala

scala vestibuli

111

decending scala

scala tympani

112

scala filled with endolymph and membranous labyrinth

scala media (cochlear duct)

113

membrane that seperates scala vestibuli and scala media

vestibular membrane

114

membrane that rests right over the top of the organ of corti

techtorial membrane

115

membrane that seperates scala media from the scala tympani

basilar membrane

116

hairs of the cochlear duct (scala media) are found here

organ of corti

117

scala that shares half of its area with the scala media

scala vestibuli

118

inferior of the two openings, thin membrane that spans the opening and seperates the perilymph from the air of the middle ear

round window

119

superior of the two openings, almost filled by stapes, annular ligament completes the seal, vibration of the stapes causes pressure way to originate here

oval window

120

nerve responsible for equilibrium

vestibular branch of vestibulocochlear nerve

121

nerve responsible for hearing

cochlear branch of vestibulocochlear nerve

122

pathway of sound (14 in order)

pinna
external auditory canal
tympanic membrane
maleous
incus
stapes
oval window
displacement of perilymph in scala vestibuli
vibration of vestibular membrane
displaces endolymph in cochlear duct
vibration basilar membrane
bends haircells of the organ of corti against tectorial membrane
nerve impulse travels down cochlear branch of the vestibulocochlear nerve

123

wavelike movement of fluid in the ear in response to vibrations at the oval window

pressure wave