Mind and behaviour Chapter 4
0.0 / 5
- Created by: Maddy
- Created on: 20-10-17 12:37
What role do Neurons play?
They generate electricity that create nerve impulses and release chemicals to communicate with other Neurons,muscles and glands
1 of 43
What does the Soma do?
The cell body that contains the information on how that cell works
2 of 43
What is the role of the Dendrites?
to collect messages from neighbouring Neurons and send them to the Soma
3 of 43
What does the Axon do?
Conducts electrical impulses to pass on information to other muscles,cells and glands
4 of 43
What is the resting potential?
Negatively charged ions within the Neuron causing polarization, the neuron is at rest
5 of 43
What is the Action potential?
Electrical impulses starting in the Soma stimulates the movement of positive ions into the neuron causing brief polarization and for the message to be passed down the Axon, like a mexican wave
6 of 43
What is a graded potential?
a change in the resting potential not large enough to spark an action potential, if enough of these happen at the same time it can spark an action potential
7 of 43
What is the role of Myelin?
To provide insulation to the Axon allow conduction to be much more effective
8 of 43
How do Neurons communicate with other cells?
Through synapses using an electrical spark to trigger the recieving of a message by a post synaptic cell
9 of 43
What are Neurotransmitters?
Chemical substances carryig messages across the synaptic space
10 of 43
What are the 5 stages of chemical communication?
Synthesis,Storage,release,binding,deactivation
11 of 43
In what two ways does deactivation occur?
Transmitter broken down by other chemicals or by reuptake (transmitter molecules taken back into presynaptic stage)
12 of 43
What are Neuromodulaters?
Chemicals that increase sensitivity to specific neurotransmitters,e.g Endorphins
13 of 43
What are the 3 main types of Neurons?
Sensory,Motor,Interneurons
14 of 43
What do Sensory Neurons do?
carry messages from sense organs to spinal cord and brain
15 of 43
What do Motor Neurons do?
Transmit messages from spinal cord to muscles
16 of 43
What do Interneurons do?
perform a connective function
17 of 43
What are the two parts of the PNS?
Somatic nervous system,Automatic nervous system
18 of 43
What is the SNS?
A system of sensory and motor neurons that help us to sense our environment
19 of 43
What is the role of the ANS?
To control the bodies automatic actions, the sympathetic function is one of arousal (fight or flight), the parasympathetic function calms your body down again
20 of 43
What is the aim of the ANS?
To achieve a state of equilibrium
21 of 43
What are the different types of brain imaging?
CT,PET,MRI,FRMI
22 of 43
What are the advantages of using an FMRI over an MRI?
FMRI measures activity as well as structure, also FMRI doesn't involve radiation so they can be done more regularly, However they are expensive
23 of 43
What are the issues with brain imaging?
It studies the whole brain at once,knowing where doesn't tell us what how or why
24 of 43
What are the three parts of the brain?
Hindbrain,Midbrain and Forebrain
25 of 43
What does the brain stem do?
it controls basic life support functions like breathing
26 of 43
What does the cerebellum control?
controls muscle movement, needed for precise timing and coordination of movement
27 of 43
What do the sensory and motor neurons in the midbrain do?
Sensory neurons send information from eyes and ears to the forebrain,motor neurons control eye movements
28 of 43
What does the reticular formation do?
alerts parts of the brain that messages are coming and either accepts or rejects them
29 of 43
What does the thalamus do?
It is the switchboard of the brain making sure that messages from neurons go to the right places
30 of 43
What does the hypothalamus do?
secretes hormones that control emotions, producing neurotransmitters to stop/make people do things
31 of 43
What does the hippocampus do?
It has a role in forming and retrieving memories
32 of 43
What does the Amygdala do?
It controls negative emotions, damage to this causes people to be more agressive and fearful
33 of 43
What does the cerebral cortex do?
Split the brain into 4 lobes (in each hemisphere)
34 of 43
What does the motor cortex do?
Control the muscle movement on the opposite side of the body, smaller body parts have greater representation here
35 of 43
What does the somatic sensory cortex do?
receive sensory input that give rise to our sensations of hot,cold,sharp etc, surface area related to sensativity
36 of 43
What does Wernicke's area do?
helps us to understand speech and the meaning of language
37 of 43
What does Broca's area do?
Helps us form a coherent reply to written or spoken language
38 of 43
What does the association cortex do?
It allows us to percieve what things are by connecting sight,language and thought
39 of 43
What do the frontal lobes do?
They are involved in planning,responsibility,emotions and self awareness
40 of 43
What does the pre frontal cortex control?
It controls decision making, recognising that actions have consequences, stopping us from making impulsive decisions
41 of 43
How is information transmitted between the two hemisperes?
It is passed along corpus callosum which is a band of nerve fibres
42 of 43
What is lateralisation?
the specialisation of a function to one hemisphere (although both hemispheres play a part in all actions)
43 of 43
Other cards in this set
Card 2
Front
What does the Soma do?
Back
The cell body that contains the information on how that cell works
Card 3
Front
What is the role of the Dendrites?
Back
Card 4
Front
What does the Axon do?
Back
Card 5
Front
What is the resting potential?
Back
Related discussions on The Student Room
- My Dissertation Helpful Tips! 3rd year Criminology Student »
- Oxford PPL vs Cambridge PBS? »
- Biomedical Science Oxford »
- neuroscience vs psychology »
- AQA A Level Psychology Paper 2 7182/2 - 8 Jun 2022 [Exam Chat] »
- is my epq question too broad? »
- When did yall get so creepy »
- Do you learn to read people's minds when studying psychology? »
- Psychology 9 mark question »
- Edexcel A-level Psychology Paper 1 (9PS0 01) - 19th May 2023 [Exam Chat] »
Similar Psychology resources:
0.0 / 5
0.0 / 5
5.0 / 5 based on 1 rating
0.0 / 5
0.0 / 5
0.0 / 5
4.0 / 5 based on 1 rating
3.0 / 5 based on 2 ratings
0.0 / 5
Comments
No comments have yet been made