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Flashcards in The Structure Of The Eye Deck (17)
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1

Pupil

The hole in the iris that light passes through to reach the retina

2

Iris

Makes the pupil large when light is dim, small when light is bright. (It's a muscle)

3

Muscles

Allows the eye to move which provides vision in various directions

4

Fat

Later surrounding the eyeball which cushions and protects it from damage

5

Optic nerve

Carries nerve signals to the brain. Tube like structure in the back of the eyeball

6

Sclera

The tough cover of the eyeball that forms the "white" of the eye (protects the eye)

7

Choroid

A layer found between the sclera and the retina that contains may blood vessels which bring nutrients and oxygen to the eye and remove waste

8

Retina

The area where the image is produced and converted into nerve signals. Inside layer structure inside the back area of the eye

9

Vitreous Humour

A jelly like fluid found in the centre of the eye which helps maintain the eye's shape and plays a small role in focusing light on the retina

10

Lens

Helps focus light in the retina. Behind the iris

11

Cornea

Helps focus light on the retina. Outside layer in front of the iris

12

Aqueous humour

A watery fluid found between the cornea and iris which maintains the shape of the front of the eye and plays a small role in focusing light

13

Blind spot

The area where the optic nerve and blood vessels connect to the retina, there are no rods or cones

14

Ciliary muscles

Control the thickness of the lens, to adjust for near and far objects

15

Suspensory legaments

Attach the ciliary muscles to the lens which allow the lens to change shape and focus light on the retina

16

Rods

A type of light receptor cell which is sensitive to the level of light

17

Cones

A type of light receptor cell which is sensitive to colour