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Nervous system (Bio) > Eye quiz > Flashcards

Eye quiz Flashcards

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Biology 101 flashcards
1
Q

Protect the eye; allows light to pass through the interior of the eye; also refracts (bends) light

A

Cornea

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2
Q

Focuses image on retina

A

Lens

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3
Q

Control size of pupil opening

A

Iris

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4
Q

Allow light to pass to lens then to retina

A

Pupil

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5
Q

In between cornea and lens, provides nutrients, maintains shape of eye, bends light

A

Aqueous humor

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6
Q

Collect light rays, form image

A

Retina

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7
Q

Responsible for fine/acute focus/vision

A

Fovea centralis

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8
Q

Where optic nerve comes into contact with retina

A

Blind spot

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9
Q

Supplies oxygen, nutrients and fluids to various parts of eye; also prevents light from bouncing around inside eye

A

Choroid layer

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10
Q

Protect eye, maintain shape by holding fluids in

A

Sclera

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11
Q

Connects with blind spot, sends info from retina to the brain

A

Optic nerve

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12
Q

Light/dark sensitive receptors -works best when dim

A

Rods

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13
Q

Colour sensitive receptors

A

Cones

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14
Q

Jeeps eyeball full (shape) provides nutrients (jelly like fluid)

A

Vitreous humor

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15
Q

Relaxed= lens long & skinny
Contracts=short & fat

A

Ciliary muscle

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16
Q

caused by an uneven curvature of the cornea lens. Causes light rays to be distorted, causes some objects to be focused & others unfocused

A

Astigmatism

17
Q

Growths & distortions of the lens leading to distorted cloudy vision. Cured by removal & replaced with a plastic lens

A

Cataracts

18
Q

defects in the cones

A

Colour blindness

19
Q

can result from trauma to eye or brain.

A

Blindness

20
Q

build up of aqueous humor-increases pressure- causes blood vessels to collapse-no oxygen to cells-death of cells

A

glaucoma

21
Q

caused by eyeball losing round shape and becoming more oblong. Light rays converge before they reach retina.(myopia)

A

Nearsightedness

22
Q

caused by eyeball becoming more flattened than round. Light rays converge after retina.(hyperopia)

A

Farsightedness

Nervous system (Bio) (6 decks)

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