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- 1. Multiple Choice
The purpose of the iris in the mammalian eye is to
focus the light coming into the eye
detect the image coming into the eye
control the amount of light coming into the eye
determine the color of the image coming into the eye
- 2. Multiple Choice
The number of extrinsic muscle that control the movement of the human eye is
2
4
6
thousands
- 3. Multiple Choice
The black circle in the front of the eye allows light to enter the eye
iris
pupil
cornea
fovea centralis
- 4. Multiple Choice
What is the Conjunctiva?
a clear thin membrane that covers the optic nerve
a clear and thin membrane that covers the entire sclera
a clear and sensitive part found only on the external eye lids that react to bacteria
a clear, thin membrane that covers part of the front surface of the eye and the inner surface of the eyelids
- 5. Multiple Choice
Which of the following eye materials/structures are not involve with the refraction of light (focusing) ?
lens
retina
cornea
vitreous humour
aqueous humour
- 6. Multiple Choice
Suspensory ligament of lens connect to the
Pupil
Cornea
Sclera
Ciliary muscles
- 7. Multiple Choice
The Blind spot is caused by
a hole in the pupil
too much light that damages the retina
a lack of receptors where the optic nerve and blood vessels leave the eye
too many receptors where the optic nerve and blood vessels leave the eye
- 8. Multiple Choice
A structure that carries messages from the eye to the brain
retina
macula
optic nerve
olfactory nerve
blood vessels in the choroid coat
- 9. Multiple Choice
Accommodation of the eye the refers to
the ability of the ciliary muscles to change the shape of the lens
the ability of the iris to control the amount of light that enters the eye
the ability of the ciliary muscles to change the shape of the eye ball
the ability of the brain to interpret the meaning of an image that is upside down
- 10. Multiple Choice
A gel-like substance that preserves the eye shape and refracts light is
ciliary body
clotted blood
vitreous humour
aqueous humour
- 11. Multiple Choice
The most sensitive part of the retina that detect detailed and coloured vision is the
iris
blind spot
optic nerve
fovea centrals
- 12. Multiple Choice
Bright light will cause the
Pupil to get smaller
Iris to become smaller
Fovea centrals to move
Pupil to get much larger
- 13. Multiple Choice
#2 refers to
optic nerve
cornea
iris
pupil
- 14. Multiple ChoiceThe clear tissue that covers the front of the eye.LensPupilIrisCornea
- 15. Multiple Choice
The thick, tough, white outer covering of the eyeball is called the __________________.
sclera
lens
pupil
cornea
- 16. Multiple ChoiceType of photoreceptor that is active in bright light and perceives color?fovea centralisconesrodsoptic disk
- 17. Multiple Choice
What is the space inside the iris called?
lens
pupil
ciliary body
posterior chamber
- 18. Multiple Choice
The optic nerve transmits signals to the
temporal lobe
parietal lobe
occipital lobe
frontal lobe
- 19. Multiple Choice
The tapetum
is found only in humans and increases night vision
is a multicolour layer found in some mammals but it reduces night vision
a multicolour reflective layer of the choroid in the eyes of many mammals that increases night vision
is a multicolour reflective layer that covers the retina in some mammals that increases night vision
- 20. Multiple Choice
What does the sclera do?
protects the eye
helps the eye focus
allows light to enter eye
transmits light rays to retina
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