EYE Flashcards

(78 cards)

0
Q

Lens, Retina, Cornea, Pigmented layers are all derived from what layer of the eye

A

ectoderm

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1
Q

Fibrous coats of the eye are derived from what layer

A

mesoderm

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2
Q

What three coats compose the eye

A

Fibrous, Vascular, Nervous

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3
Q

Fibrous coat/tunic is composed of what structures

A

sclera

cornea

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4
Q

What is the name of the white part of the eye

A

sclera

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5
Q

extraocular muscles of the eye attach to which part

A

sclera

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6
Q

anteriorly, the sclera transitions to the cornea at what landmark

A

limbus

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7
Q

The anterior portion of the sclera is lined with what

A

conjunctiva

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8
Q

Posteriorly, the sclera is continuous with a fibrous sheath that covers what

A

CN II (optic nerve)

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9
Q

The clear, transparent part of the anterior eye is called

A

cornea

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10
Q

primary refractory part of the eyeball

A

cornea

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11
Q

name the 5 layers of the cornea

A
corneal epithelium
anterior limiting layer
substantia propria
posterior limiting layer
endothelium
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12
Q

The anterior limiting membrane of the cornea is also called

A

bowmans membrane

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13
Q

name the largest layer of the cornea

A

substantia propria

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14
Q

which layer of the cornea is continuous with the conjunctiva

A

corneal epithelium

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15
Q

Which layer of the cornea is continuous with the iridocorneal layer

A

endothelium

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16
Q

Vascular tunic is composed of what parts

A

choroid, ciliary body, iris

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17
Q

Which layer of the vascular tunic has a rich blood supply

A

choroid

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18
Q

Blood vessels of the choroid are heavily supplied by what fibers

A

autonomic vasomotor fibers

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19
Q

Choroid is loosely attached to the sclera except where

A

the optic nerve penetrates it, it is firmly attached here

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20
Q

Which vascular tunic layer is highly pigmented to prevent light passage

A

choroid

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21
Q

What is continuous to the ciliary body to the posterior

A

choroid

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22
Q

What is continuous to the ciliary body to the anterior

A

iris

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23
Q

what structure suspends the lens

A

ciliary body

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24
what structure produces aqueous fluid found in the anterior portion of the eye
ciliary body
25
What structure produces some GAGs of the vitrous body
ciliary body
26
ciliary body contains what muscle
ciliary muscle
27
ciliary muscle does what action
lens convexity, allows for near vision
28
colored part of the eye
iris
29
pigmented part of the iris
stroma
30
iris is divided into what two chambers
anterior and posterior
31
what two muscles does the iris contain
sphincter pupillae | dilator pupillae
32
Sphincter pupillae is controlled by what fiber type
parasympathetic
33
Dilator pupillae is controlled by what fiber types
sympathetics
34
What is an outgrowth of the diencephalon
retina
35
Nervous tunic contain what structure
retina
36
Retina is continuous with what structure externally
choroid
37
Retina is continuous with what structure internally
vitreous body
38
photoreceptors of retina synapse with what layer
inner nuclear layer
39
inner nuclear layer bipolar cells relay information to
ganglion cell layer multipolar cells
40
ganglionic layer cells multipolar cells relay carry information to
lateral geniculate body
41
axons from the lateral geniculate body form what
optic radiation
42
lateral geniculate bodies (optic radiation) synapse in
Broadmann area 17
43
Broadmann area 17 is found in which lobe
occipital lobe
44
retinal structures visible on funduscopic exam
optic disc | macula lutea
45
point where the optic nerve attaches to the eyeball
optic disc
46
what structure appears white or yellowish in the funduscopic exam
optic disc
47
optic disc contains NO
photoreceptors
48
darker area in the center of the fundus
macula lutea
49
what structure is in the middle of the macula lutea
fovea centralis
50
area of clearest vision in eye
macula lutea
51
macula lutea contains only which type of photoreceptors
cones
52
4 refractory components of the eyeball
cornea aqueous humor lens vitreous body
53
aqueous humor leaves the eyeball via what structure
scleral venous sinus
54
increased pressure within the anterior segment of the eyeball
glaucoma
55
transparent, biconvex, avascular structure
lens
56
lens gets harder with age
presbyopia
57
lens becomes less and less transparent
cataracts
58
gelatinous and transparent structure
vitreous body
59
vestigial structure connecting the optic nerve with the posterior aspect of the lens
hyaloid canal
60
the hyaloid canal is contained by what structure
fetal hyaloid artery
61
located superiolaterally to the eye, secrete tears
lacrimal gland
62
tears are drained into the eye via what structure
excretatory duct
63
below and medial to eyeball, drains tears
lacrimal duct
64
receives tears from lacrimal duct, located between the maxilla and the lacrimal bone
lacrimal sac
65
most superior part of the nasolacrimal duct
lacrimal sac
66
drains tears from the lacrimal sac to the inferior nasal meatus
nasolacrimal duct
67
modified sebaceous glands that secrete oily substance that cover tears upon blinking
tarsal gland
68
reduces evaporation of tears
tarsal gland
69
all arteries to the eyeball are branches of what artery
opthalamic artery
70
arterial supply to the eye between the sclera and the choroid
long posterior ciliary artery
71
arterial supply to the eye enters on the posterior side forming ring around the optic nerve
(6-12) short ciliary arteries
72
arterial supply to the eye arch over (3-4) and under (3-4)
(6-8) anterior ciliary arteries
73
arterial supply to the eye that travels via the optic nerve to retina. ONLY nerve to supply the retina
central retinal artery
74
sensory nerves for the eyeball
short ciliary nerves
75
sensory nerve supply for iris, cornea, ciliary body
long ciliary nerves
76
postganglionic sympathetic fibers of the eye pass through which plexus
cavernous plexus
77
postganglionic sympathetic fibers pass through the cavernous plexus through which ganglion
ciliary ganglion