Eyes And Brain p2

Question 1

Myopia

Answer 1

Shortsighted use glasses with a concave lens to correct it

Question 2

Hyperopia

Answer 2

Longsighted use glasses with a convex lens to correct it

Question 3

Sclera

Answer 3

Tough supporting wall of eye

Question 4

Iris

Answer 4

Contains muscles that control the diameter of pupil therefore how much light enters the eye

Question 5

Ciliary muscles and suspensory ligaments

Answer 5

Controls shape of the lens

Question 6

Optic nerve

Answer 6

Carries impulses from the receptors on the retina to the brain

Question 7

Retina

Answer 7

The lens focuses light on it

Question 8

Contact lenses

Answer 8

Thin lenses that sit on surface of eye

Question 9

Laser eye surgery

Answer 9

Vaporises tissue or changes shape of cornea to improve eyesight

Question 10

Replacement lens surgery

Answer 10

Artificial lens made of clear plastic is put in place of natural lens

Question 11

Cerebral cortex

Answer 11

The wrinkly outer bit responsible for consciousness and intelligence memory and language

Question 12

Cerebellum

Answer 12

Responsible for muscle coordination

Question 13

Medulla

Answer 13

Responsible for unconscious activities like breathing and your heartbeat

Question 14

What does the eye do in bright light

Answer 14

Pupil gets smaller muscles in Iris contract radial muscles relax. This reduces amount of light entering the eye

Question 15

What does the eye do in dim light

Answer 15

Circular muscles in Iris relax and radial muscles contract which makes the pupil widen.