Science Test 2017 Term 3

?
Parietal Lobe
Located below the crown. Processes sensory info on pain, touch, pressure.
1 of 36
Frontal Lobe
Located behind the forehead. Initiates and coordinates motor movements and higher cognitive skills (problem solving, thinking)
2 of 36
Temporal lobe
Located above the ears. Processes auditory info and integrates sensory info eg smell and vision.
3 of 36
Occipital lobe
Located lower back of cortex. Processes visual info.
4 of 36
What controls the controls body temp, hunger, thirst
Hypothalamus
5 of 36
What controls simple reflexes
Brain Stem
6 of 36
What are the two parts of the Limbic system and their functions.
Hippocampus- controls learning and memory Amygdala – role in emotional behavior
7 of 36
What are nerve cells called?
Neurons
8 of 36
What are the 3 main parts of a neuron?
Cell body- controls the neurons activities Dendrites- receives messages from other neurons . Axon- sends messages fro the cell body to the dendrites of other neurons
9 of 36
What covers the axon?
The Myelin sheath covers the axon to protect it and help messages travel faster and easier.
10 of 36
Define accommodation
The ability to focus on different objects from different distances.
11 of 36
How is accomodation achieved?
Accommodation is achieved by the ciliary body changing the shape of the lens so light is focussed on the retina
12 of 36
What is the eye's blind spot?
The optic disc because it does not contain any photoreceptors.
13 of 36
What is the near-point of the eye?
The point nearest the eye at which an object is clearly focused on the retina when accommodation of the eye is at a maximum.
14 of 36
What is the far point of the eye?
The farthest point from the eye at which images are clear when the eye is not accommodating
15 of 36
What is the role of the lens?
It focuses light onto the retina.
16 of 36
How do images appear on the retina?
Upside down
17 of 36
What is the retina?
The layer of light sensitive cells that send electrical impulses to the optic nerve?
18 of 36
What is binocular vision?
When you use two eyes to focus on one thing to create a single mental impression.
19 of 36
What is reflection?
When light bounces back.
20 of 36
What is refraction?
When light bends when passing through one substance to another.
21 of 36
What two types of cells do our retina contain?
Rods and cones
22 of 36
What are rods responsible for?
Rods are responsible for vision at low light levels (scotopic vision)
23 of 36
What are cones responsible for?
Cones are 1) active at higher light levels 2) are capable of colour vision 3) responsible for high spatial acuity
24 of 36
What colours can cones detect?
The primary colours
25 of 36
What is Astigmatism?
When the cornea is irregularly shaped, resulting in blurred or distorted vision.
26 of 36
What is Myopia? (short sightedness)
When the curvature of the cornea is steep, meaning that light entering the eye does not focus directly on the retina, but focuses in front of the retina, causing the distance image a person sees to be out of focus.
27 of 36
What is Hyperopia?
When the curvature of the cornea is flat, meaning that light entering the eye does not focus directly on the retina, but focuses beyond it. This causes near images to appear out of focus and blurred.
28 of 36
What is colourblindness?
The decreased ability to see color or differences in color.
29 of 36
Why is colourblindness mostly seen in men?
It is carried down to them from their mothers. Boys only have one X chromosome and so if they have this deficiency, they do not have a second one to compensate for it, whilst girls do.
30 of 36
What objects does the eye focus on when the lens is thick?
Close objects
31 of 36
What objects does the eye focus on when the lens is thin?
Far objects
32 of 36
What is the point at which the reflected rays meet?
The focal point
33 of 36
What is the angle of incidence?
The angle at which light goes in.
34 of 36
What is the angle of refraction/reflection?
The angle at which the light exits/is reflected off the surface.
35 of 36
What is the difference between the angle of refraction and the reflection?
The angle of reflection is the same as the angle of incidence, whilst the angle of refraction is greater than the angle of incidence.
36 of 36

Other cards in this set

Card 2

Front

Frontal Lobe

Back

Located behind the forehead. Initiates and coordinates motor movements and higher cognitive skills (problem solving, thinking)

Card 3

Front

Temporal lobe

Back

Preview of the front of card 3

Card 4

Front

Occipital lobe

Back

Preview of the front of card 4

Card 5

Front

What controls the controls body temp, hunger, thirst

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Eye and Brain resources »