Eye

Question 1

What is the function of the Conjunctiva?

Answer 1

lubricates and protects the surface of eye?

Question 2

what is the function of the Sclera?

Answer 2

tough outer layer that protects the eye

Question 3

what is the function of the Cornea?

Answer 3

refracts (bends) light into the eye. The cornea is transparent and has no blood vessels to supply it with oxygen diffused from the outer surface.

Question 4

what is the function of the iris?

Answer 4

controls the diameter of the pupil (the whole in the middle) and therefore how much light enters the eye.

Question 5

what is the function of the Lens?

Answer 5

focuses the light onto the Retina (the light-sensitive part -it is covered in light receptors called rods and cones)

Question 6

label the eye?

Answer 6

Question 7

what response is triggered in very bright light?

Answer 7

Very bright light can damage that retina - so you have a reflex to protect it
triggers a reflex that makes the pupil smaller

Question 8

what response is triggered in dim light?

Answer 8

the brain tells the radical muscles to contract, which makes the pupils bigger.

Question 9

How does eye change in dim light and bright light?

Answer 9

Question 10

what does the eye do when looking at distant objects?

Answer 10

Question 11

what does the eye do when looking at near objects?

Answer 11