Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology GCSE > The Eye > Flashcards

The Eye Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards AP® Biology flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards Biology 101 flashcards
1
Q

What is the sclera

A

Tough outer coat. Visible white part of the eye.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the choroid layer

A

Middle layer of eyeball. Deeply pigmented to absorb light and prevent internal reflection. Contains lots of blood vessels.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the retina

A

Innermost layer in eye. Contains many rods and cones + fibre nerves.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the optic nerve

A

Carries nerve impulses from the retina directly.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the fovea (yellow spot)

A

Part of the retina where cones are concentrated these enables us to see colours in bright light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the conjunctiva

A

Transparent layer the protects cornea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the cornea

A

Transparent window at front of eye. Allows light to pass through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the iris

A

Coloured ring of tissue behind cornea. Controls amount of light entering the eye by changing size of pupil.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the pupil

A

Hole in centre of iris - size is controlled by radial and circular muscles of iris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the ciliary body/ciliary muscle

A

Contains muscles which can contact or relax to change thickness of lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the suspensory ligament

A

Hold lens in position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the lens

A

Clear part behind the iris that helps to focus light onto the retina. Helps to focus on far and close objects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The retina consists of _________ and _________

A

Rods and cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

________ see in dim light

A

Rods see in dim light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

________ see in bright light

A

Cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

________ see black and white vision while _________ see colour

A

Rods Cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

_________ are found throughout the retina

A

Rods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

___________ are concentrated in the yellow spot

A

Cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the 2 types of muscle around the iris

A

Circular and Radial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

When the circular muscle contracts, the pupil gets _____________

A

Smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

When the radial muscle contracts, the pupil gets ____________

A

Bigger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Name the stimulus that enters the eye and is detected by receptors

A

Light

23
Q

Which part of the eye contains receptors

A

Retina

24
Q

How do messages travel from receptors in the eye to the brain

A

By nerve impulses. Receptor —> Along a sensory neuron (optic nerve)

25
Q

Name 3 sense organs

A

Tongue, Nose, Ears

26
Q

The _________ consists of circular and radial muscles

A

Iris

27
Q

The __________ consists of millions of light sensitive cells

A

Retina

28
Q

The ____________ consists of many blood vessels

A

Choroid

29
Q

The _________ contains only cones

A

Yellow spot / Fovea

30
Q

The blind spot has no _________-sensitive cells

A

Light-sensitive cells

31
Q

The ligaments hold the _______

A

Lens

32
Q

The __________ allows light to enter the eye

A

Pupil

33
Q

The __________ bends the light rays

A

Cornea

34
Q

The lens can change __________

A

Shape

35
Q

The optic nerve sends messages to the __________

A

Brain

36
Q

The rods respond to _______ light

A

Dim light

37
Q

The cones respond to __________ light

A

Bright light

38
Q

In bright light the pupil becomes ___________

A

Smaller

39
Q

In bright light the __________ muscles relax and the ____________ muscles contract - thus the pupil becomes ___________

A

Radial

Relax

Circular

Contracts

Smaller

40
Q

If it is bright, then the pupil becoming smaller allows ________ light to fall on the ___________ at the back of the eye

A

Less Retina

41
Q

What is the job of the iris

A

Controls the amount of light that falls in the retina

42
Q

Flow diagram to summarise the stages in a spinal reflex

A

Stimulus —> receptor —> sensory neurone —> relay neuron —> motor neuron —> effector

43
Q

1

A

Suspensory Ligament

44
Q

2

A

Conjunctiva

45
Q

3

A

Iris

46
Q

4

A

Pupil

47
Q

5

A

Cornea

48
Q

6

A

Ciliary muscle

49
Q

7

A

Lens

50
Q

8

A

Retina

51
Q

9

A

Fovea

52
Q

10

A

Optic nerve

53
Q

A person moves from a dim room into bright sunshine. Describe the change in the appearence of their pupils.

A

Their pupils contract to allow less light into the eye

54
Q

In the dark you cannot see colours… Why?

A

Because in the dark our eyes only use rods which don’t see colours. Cones don’t respond to dim light therefore they aren’t used.

Biology GCSE (28 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions