Eye Anatomy Flashcards
1
Q
what is the orbit
A
bony socket that contains the eyeball
2
Q
what does the orbit consist of
A
nerves, blood vessels, fat, connective tissue, muscle
3
Q
what is the function of the eyelid
A
protection and lubrication of the eye
4
Q
what are the 3 parts of the eyelid
A
- upper lids (eyelashes)
- lower lids
- third eyelids
5
Q
how does the third eyelid move
A
diagonal movement spreading across cornea
6
Q
what does the iris do
A
muscles contacts, relax the pupil
7
Q
what does the cornea do
A
bends light, focusing it on retina
8
Q
what does the retina do
A
converts light energy to chemical energy
9
Q
how does the retina see during day/night
A
rods (night vision)
cones (day vision)
10
Q
how does the retina aid in motion detection
A
ganglion cells conduct visual impulse quickly
11
Q
what does the pupil do
A
adapts to amount of light available
12
Q
what does the tapetum
A
reflects light
