Chapter 9: The Eye Flashcards
1
Q
Study of light rays and their interactions
A
Optics
2
Q
Bouncing of light rays off a surface
A
Reflection
3
Q
Transfer of light energy to a particle or surface
A
Absorption
4
Q
Bending of light rays from one medium to another
A
Refraction
5
Q
opening where light enters the eye
A
Pupil
6
Q
white of the eye
A
Sclera
7
Q
gives color to eyes
A
Iris
8
Q
glassy transparent external surface of the eye
A
Cornea
9
Q
3 pairs the move the eye in its orbit
A
Extraocular muscles
10
Q
bundle of axons from the retina
A
Optic Nerve
11
Q
- suspended by ciliary muscles
- divides interior of eye into two
compartments with different fluids
A
Lens
12
Q
- watery
- nourishes cornea
- High pressure reduces blood
supply and damages
retina»glaucoma
A
Aqueous Humor
13
Q
- jelly-like
- keeps eye-ball spherical
- 80% of volume of the eye
- Contains phagocytic cells that remove debris
- Source of “floaters”
A
Vitreous humor
14
Q
Tests fidelity of connections between retina and brain stem neurons that control muscles around pupil
A
Pupillary Light Reflex (PLR)
15
Q
shining a light into one eye causes constriction of both pupils
A
Consensual
