The Eye

Question 1

What is the function of the Cornea?

Answer 1

• Protects the eye

- Transparent covering

Question 2

What is the function of the Sclera?

Answer 2

• To protect and support

- White part of the eye

Question 3

What is the function of the Retina?

Answer 3

• Detects light rays

- Layer of sensitive cells at the back of the eye

Question 4

What is the function of the Choroid?

Answer 4

• Provides nutrients to the eye
• Black pigment
• Layer of blood vessels

Question 5

What is the function of the Iris?

Answer 5

• A ring of muscle
• Coloured part of the eye
• Controls amount of light entering

Question 6

What is the function of the Pupil?

Answer 6

• The hole in the iris

- Allows light to enter eye

Question 7

What is the function of the Lens?

Answer 7

• Focuses light onto retina to focus on objects
• Transparent
• Can be moved by ciliary muscles

Question 8

What is the function of the Ciliary Body?

Answer 8

• Produces aqueous humor

- Alters shape of the lens

Question 9

What is the function of the Vitreous Humor?

Answer 9

• Provides eye with shape

- Located behind lens

Question 10

What is the function of the Aqueous Humor?

Answer 10

• Keeps eye rounded in shape
• Provides nutrients
• Located behind cornea

Question 11

What is the function of the Lateral Rectus Muscle?

Answer 11

• Helps move pupil away from centre of body (away from nose)

Question 12

What is the function of the Medial Rectus Muscle?

Answer 12

• Helps move pupil towards centre of body (towards nose)

Question 13

What is the function of the Fovea?

Answer 13

• Small dimple in retina

- Full of cone cells to give sharp vision

Question 14

What is the function of the Optic Disc?

Answer 14

• Blind spot where optic nerves leave the eye

Question 15

What is the function of the Optic Nerve?

Answer 15

• Bundle of fibres

- Sends information from retina to brain