Eye Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Sclera

A
  • White of eye
  • Tough protective layer
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2
Q

Cornea

A
  • Transparent part of sclera
  • Light enters through cornea
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3
Q

Iris

A
  • Coloured part of the eye behind the cornea
  • Adjusting the iris helps to regulate or adjust light exposure
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4
Q

Pupil

A
  • Opening in iris - Black part of eye
  • This is controlled with help of iris to control amount of light entering the eye
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5
Q

Lens

A
  • Lens behind iris and pupil
  • Using the ciliary muscles, it changes its shape to focus light on the retina
  • It becomes thinner to focus on distant objects and thicker to focus on the nearby objects.
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6
Q

Retina

A
  • Light-sensitive layer with numerous nerve cells
  • It converts images formed by the lens into electrical impulses
  • These electrical impulses are then transmitted to the brain through optic nerves
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7
Q

Optic nerves - cones

A
  • Optic nerve cells sensitive to bright light
  • They help in detailed central and colour vision
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8
Q

Optic nerves - rods

A

-Optic nerve cells more sensitive to dim lights
- They help in peripheral vision

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