week 5 Flashcards

1
Q

what are the two sections of the eye

A

anterior segment
prosterior segment

a = 1/3 of eye p=2/3 of eye

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2
Q

what do eyelids do

A

protects eye from getting dr by secreting oils

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3
Q

what is the sclera

A

white section outer body formed by collogen

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4
Q

what is a limbus

A

boundary between two things

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5
Q

what is the conjunctiva

A

thin layer to provide oxygen to sclera and produces tear film

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6
Q

what is the caruncle

A

sweat and oil glands to protect the eye

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7
Q

what are the upper and lower punctum

A

where tears drain

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8
Q

what is the inner canthus

A

closest to the nose and where lids meet

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9
Q

what is the outer canthus

A

outer part where lids meet

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10
Q

what is the iris

A

coloured part of eye

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11
Q

what does the ciliary body do

A

pull on sensory ligaments

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12
Q

what do suspensory ligaments do

A

pull on the lens

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13
Q

what is the choroid

A

full of blood vessels allows nutrients and oxygens to the retina

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14
Q

how many indiv bones in the skull

A

22 indiv. bones

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15
Q

how many cranial bones in the skull

A

8

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16
Q

what are the 8 cranial bones

A

2x parietal bones
2x temporal bones
occipital bone
frontal bone
sphenoid bone
ethmoid bone

17
Q

how many facial bones are

A

14

18
Q

how many facial bones form the bony orbit

A

7

19
Q

what are the layers of the meninges

A

outer- dura mater
anachnoid
inner- pia mater

20
Q

what are the bones within the orbit

A

zygomatic
maxilla
lacrimal
palatine
sphenoud
ethmoid
frontal

zero maintence learning parisa says essentially failing

21
Q

what are the areas of the orbit

A

roof
floor
median
lateral
foramen and fissures
apex
optical axis

22
Q

what is the orbita

A

eye and its surrounding structures
filled with fat which acts as a shock absorber
thin bone on orbital floor

23
Q

what happens in an orbital floor blowout fracture

A

thin bone prone to trauma fractures
causing fatty tissue to enter cavity below
patients present with diplopia and sunken ocular globe

24
Q

what does peri mean

A

next to

25
Q

what bones are on the roof of the orbit

A

orbital plate of frontal bone
lesser wing of sphenoid

25
Q

what bones are on the orbital floor

A

orbital plate of maxilla
orbital surface of zygomatic
orbital process of palatine

26
Q

what bones are in the median part of the orbit

A

frontal process of
maxilla
lacrimal bone
orbital plate of ethmoid
body of sphenoid

27
Q

what bones are in the lateral part of the orbit

A

zygomatic and greater wing of sphenoid

28
Q

where is the apex of the orbit

A

optic canal
carries optic nerve