Cognition

Question 1

Label the structure of the eye in order:

Answer 1

1: Cornea
2: Pupil
3: Iris
4: Ciliary muscles
5: Lens
6: Vitreus humour
7: Retina
8: Optic nerve

Question 2

Cornea:

Answer 2

• protects the eye

- helps light enter the retina

Question 3

Pupil:

Answer 3

• helps control the amount of light entering the eye

- opening in the iris

Question 4

Iris:

Answer 4

• controls the amount of light entering the eye

- contains a ring of muscles which helps control the size of the eye

Question 5

Ciliary muscles:

Answer 5

• located either side of the lens
• expands and contracts muscles
• allows lens to change shape

Question 6

Retina:

Answer 6

• receives and absorbs light

- connects to brain by optic nerve

Question 7

Optic nerve:

Answer 7

• transfers visual information from the retina to the visual cortex

Question 8

Lens:

Answer 8

• focuses light onto the retina

- adjusts shape depending on the distance of the object being viewed

Question 9

Vitreus humour:

Answer 9

• gel-like substance

- occupies space between lens and retina