Quiz – The Eye
Worksheet – The Eye
Name: ________________________
Match the name to its description/function
A. aqueous humor
B. cataract
C. chalazion
D. choroid
E. ciliary gland
F. cones
G. conjunctiva
H. cornea
I. fovea centralis
J. iris
K. lacrimal fluid
L. lacrimal gland
M. lens
N. meibomian or tarsal gland
O. nasolacrimal duct
P. optic disk
Q. optic nerve
R. palpebra
S. pupil
T. retina
U. rods
V. sclera
W. sty
X. suspensory ligaments
Y. vitreous humor
_ "white" of eye - tough outer coat that extends all around eye
_ “blind spot” – where optic nerve leaves the eyeball
_ blood rich middle layer that is darkly pigmented to prevent light scattering
_ carries sight impulses to brain
_ contains ciliary body muscles that adjust shape of lens as necessary to focus
_ contains only cones – site of greatest visual acuity
_ dilute salt solution that contains antibodies & lysozyme
_ eyelids
_ focuses light on retina for visual clarity
_ Gel like substance that holds shape of eyeball – located between lens & retina
_ Clouding & hardening of the lens – can be treated surgically
_ inflammation of the ciliary gland
_ inflammation of the tarsal gland
_ innermost layer that contains photoreceptors - "screen" of eye
_ produces oil to lubricate eye
_ opening through which light passes to enter the inner part of eye
_ Pigmented muscle fibers that regulates light entering eye
_ produces sweat (watery fluid)
_ produces tears to wash surface of eye
_ responsible for color vision
_ responsible for gray tone vision
_ thin moist membrane that lines eyelids & connects to surface of eye
_ transparent layer in front of lens - lets light in- often transplanted
_ Watery fluid that provides nutrients for lens & cornea – located between lens & cornea
_ Empties tears into nasal cavity
Match the letters on the diagrams to the parts below
_ aqueous humor
_ choroid
_ ciliary body
_ cornea
_ fovea centralis
_ iris
_ lens
_ optic disc
_ optic nerve
_ pupil
_ retina
_ sclera
_ suspensory ligament
_ vitreous humor
[pic]
Match the muscles to their function
a. superior oblique
b. inferior oblique
c. lateral rectus
d. medial rectus
e. superior rectus
f. inferior rectus
_ moves eye laterally
_ Depresses eye and turns it laterally
_ Elevates eye
_ Moves eye medially
_ Elevates eye and turns it laterally
_ Depresses eye
___________________________________________________________________________
Match the eye muscles to the diagram
_ Superior oblique
_ Inferior oblique
_ Lateral rectus
_ Medial rectus
_ Superior rectus
_ Inferior rectus
_ Optic nerve
[pic]
1. Use the following to complete the chart:
Close objects blurry
Concave
Convex
Distant objects blurry
Farsighted
Long
Nearsighted
Short
| |Myopia |Hyperopia |
|One word definition | | |
|Explain | | |
|Eyeball is too: | | |
|Lens is too: | | |
|Cornea is too: | | |
|Corrective lens | | |
Fill in the blanks
Your answer choices:
Relaxed
Tightened
Increased
Decreased
Lens
Vitreous humor
Cornea
Presbyopia
Emmetropia
Astigmatism
Conjunctivitis
Glaucoma
1. In Distance Vision, the ciliary muscles are ___________________ while the suspensory ligaments are _______________________. This causes the light refraction to be ___________________________.
2. In Near Vision, the ciliary muscles are ___________________ while the suspensory ligaments are _______________________. This causes the light refraction to be ___________________________.
3. The older you get, the less elastic your lens becomes, this causes problems in focusing on close objects. The term for this disorder is _______________________________.
4. When there is blocked drainage in the aqueous humor circulation, pressure in the eye can build up causing _____________________________.
Short Answer - Eye.
1. List the refractory structures of the eye.
2. Which is the only structure that can change its refractory power? _______________
3. Why do you get a headache when you’ve been reading for a long time?
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