Biology-B5-The Brain

?
  • Created by: tonisha_
  • Created on: 20-10-21 19:19
How many interconnecting neurones are found in the brain?
billions
1 of 32
The outer, highly folded part of the brain is called what?
the cerebral cortex
2 of 32
What are the functions of the cerebral cortex?
(4)
language

memory

social skills

consciousness
3 of 32
What is the second part of the brain called?
the cerebellum
4 of 32
What does the cerebellum control?
(3)
balance

movement

co-ordination
5 of 32
What is the part of the brain called that is located at the base?
the medulla
6 of 32
What does the medulla control?
the heart rate

the breathing rate

movement in the gut
7 of 32
(4)
The brain is difficult to study as it is protected by what?
the skull
8 of 32
This makes it what for us to do to the brain?
makes it harder for us to access the brain
9 of 32
It is also highly what?
complex
10 of 32
It is also very?
delicate
11 of 32
Which means it is easy to what?
damage
12 of 32
(3)

One way in which scientists can investigate the brain is to electrically what?
electrically stimulate parts of the brain
13 of 32
Another way is that they can study patients already with what?
brain damage
14 of 32
Another method is?
MRI scan
15 of 32
Electrical Stimulation
-------------------------------
What is Electrical stimulation?
where different parts of the brain are stimulated
16 of 32
What are they stimulated with?
weak currents
17 of 32
What is the patient then asked?
asked about what they have experienced
18 of 32
Is the patient put to sleep or awake in this method?
awake
19 of 32
How is the patient awake?


The brain processes what?
pain
20 of 32
but has no sensory what?
nerve endings
21 of 32
or ?
pain receptors
22 of 32
Therefore, it is possible to what?
electrically stimulate someone whilst they are awake
23 of 32
However, this method requires what?
surgery
24 of 32
so what is needed?
local anaesthesia
25 of 32
If the visual area of the brain is stimulated, what will the patient experience?
a flash of colour
26 of 32
If the motor area of the brain is stimulated, what will the patient experience?
they will make an involuntary movement
27 of 32
What are 2 risks associated with this?
risk of brain infection

risk of brain damage
28 of 32
What are 2 benefits of this method?
direct feedback

clear linkage between regions and functions
29 of 32
Why may electrical stimulation be used?

What do the neurones respond the same as?
the neurones respond to external electrical stimulus in the same way that they would to and internal stimulus
30 of 32
MRI Scan
-----------------------

An MRI Scan shows the levels of what taking place where?
the levels of activity taking place in different parts of the brain
31 of 32
Why may some patients feel traumatised by an MRI Scan?
they may feel claustrophobic due to them being completely enclosed
32 of 32

Other cards in this set

Card 2

Front

The outer, highly folded part of the brain is called what?

Back

the cerebral cortex

Card 3

Front

What are the functions of the cerebral cortex?
(4)

Back

Preview of the front of card 3

Card 4

Front

What is the second part of the brain called?

Back

Preview of the front of card 4

Card 5

Front

What does the cerebellum control?
(3)

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 Homeostasis resources »