Eye Flashcards Preview

Biology > Eye > Flashcards

Flashcards in Eye Deck (10):
1

Conjunctiva

Lubricates and protects the surface of the eye

2

Cornea

Refracts light into the eye

3

Iris

Controls the diameter of the pupil

4

Lens

Focuses light onto the retina

5

Retina

Light-sensitive. Covered in light receptors

6

Rods

Sensitive in dim light

7

Cones

Sensitive to colours

8

Optic nerve

Carries impulse from the receptors to the brain

9

Close object

-ciliary muscles contract
-suspenseful ligaments relax
-lens becomes fat

10

Bright light

-circular muscles contract
-radial muscles relax
-pupil smaller