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A-Level AQA Psychology Biopsychology > The nervous system > Flashcards

The nervous system Flashcards

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1
Q

What are the two main components of the nervous system?

A

-Central nervous system (CNS)
-Peripheral nervous system (PNS)

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2
Q

What is the nervous system based on?

A

Electrical and chemical signals

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3
Q

What does the CNS consist of?

A

-Spinal cord
-Brain

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4
Q

What neurones carry impulses to the CNS?

A

Sensory neurones

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5
Q

What is the role of the spinal cord?

A

Transfer messages to and from the brain

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6
Q

What is the role of the Peripheral nervous system?

A

To relay impulses from the CNS to the rest of the body

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7
Q

What are the four lobes of the brain?

A

-Frontal lobe
-Occipital lobe
-Temporal lobe
-Parietal lobe

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8
Q

What is the peripheral nervous system split into?

A

-Somatic nervous system
-Autonomic nervous system

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9
Q

What is the role of the somatic nervous system?

A

Allows communication between the CNS and the outside world and provide muscle responses

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10
Q

What is two similarties between the autonomic NS and the Somatic NS?

A

-Both contain motor pathways
-Both respond to external stimuli

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11
Q

What is the role of the autonomic system?

A

Plays a role in homeostasis

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12
Q

What is the autonomic system made up of?

A

-Sympathetic pathway
-Parasympathetic pathway

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13
Q

What is the sympathetic pathway involved in?

A

Responses that prepare the body for flight or fight

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14
Q

What is the parasympathetic pathway involved in?

A

Returns us to our normal resting state, slowing down breathing rate and heart rate

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15
Q

What are two differences between the somatic NS and autonomic NS?

A

-Autonomic has two subcomponents, somatic only has one
-Somatic NS has both sensory and motor pathways, autonomic only has motor pathways

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16
Q

What is the function of relay neurones?

A

To allow communication between sensory and motor neurones

17
Q

What are the three similar features in neurones?

A

-Axons
-Dendrites
-Cell body

18
Q

Where are motor neurones found?

A

Within the CNS

19
Q

How do motor neurone bring about a muscle response?

A

They release neurotransmitter that bind to muscle receptors to trigger a response

20
Q

How are signals transmitted across synapses?

A

-Impulses made into neurotransmitters
-Neurotransmitter diffuses across the synapse

21
Q

What happens to a neurotransmitter once it crosses the synapse?

A

-Taken up by the post-synaptic receptor
-Changed back into an impulse

22
Q

Where do neurotransmitters release from?

A

-Synaptic vesicles

A-Level AQA Psychology Biopsychology (9 decks)

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