Biopsychology Flashcards

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1
Q

What are the 2 components of the peripheral nervous system?

A

Somatic nervous system

Automonic nervous system

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2
Q

What is the Central Nervous System composed of?

A

the brain and spinal cord

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3
Q

What is the role of the brain in the central nervous system?

A

Responsible for coordinating sensation, intellectual and nervous activity -> concious decisions

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4
Q

What is the role of the spinal cord in the central nervous system?

A

Receives information from the senses and controls the body’s unconcious response

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5
Q

What is the somatic nervous system?

A

Responsible for carrying out sensory and motor information to and from the central nervous system

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6
Q

What is the automonic nervous system?

A

Governs the brain’s involuntary activities (eg heartbeat, stress) and is self regulated

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7
Q

Define the central nervous system

A

a bundle of enclosed fibres which connects nearly all parts of the body with the brain

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8
Q

Define the nervous system

A

Network of nerve cells and fibres.

Helps all parts of the body communicate with each other

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9
Q

Define the peripheral nervous system

A

The part of the nervous system outside of the brain and spinal cord

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10
Q

What are the 2 components of the automonic nervous system?

A

Sympathetic

Parasympathetic

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11
Q

What is the sympathetic nervous system?

A

Involved in responses that help us deal with emergencies (fight or flight)

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12
Q

What is the parasympathetic nervous system?

A

Calms the body after an emergency state

Involved in energy conservation and digestion

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13
Q

What is the amygdala?

A

Brain region responsible for processing fear / pain

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14
Q

What is the hypothalamus?

A

brain region controlling homeostasis

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15
Q

What is the pituitary gland?

A

the ‘master gland’

controls other glands

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16
Q

What does ACTH do?

A

Starts production of adrenaline

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17
Q

What does CRF do?

A

starts production of cortisol

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18
Q

What is the function of the adrenal medulla?

A

to produce adrenaline

19
Q

What is the function of the adrenal cortex?

A

to produce cortisol

20
Q

What is the evidence for the negative correlation between stress and healing?

A

Sympathetic and parasympathetic cannot run together

long term stress means that the parasympathetic nervous system stops producing as many white blood cells

21
Q

Explain the applications of the fight or flight response in healthcare

A

helps reduce stress in hospitals eg patients are discharged earlier as more likely to be calm at home

the knowledge of it can help people prevent chronic stress and improve health

good economic impact as it prevents future illness

22
Q

Why does the fight or flight response lack internal validity?

A

ignores ‘tend and befriend’ stress response in females

ignores individual differences

doesn’t generalise -> no ecological validity

23
Q

What is the process of chronic stress in the body?

A

Amygdala

Hypothalamus

Pituitary Gland

Release of CRF

adrenal cortex

cortisol released

feedback loop / HPA axis back to amygdala

24
Q

What is the process of acute stress in the body?

A

Amygdala

hypothalamus

pituitary gland

release of ACTH or CRF

adrenal medulla or adrenal cortex

adrenaline or cortisol

cardiovascular response or energy response

parasympathetic nervous system

25
Q

What does the HPA axis stand for?

A

Hypothalamus

Pituitary

Adrenal

26
Q

What are the 3 types of neuron?

A

Sensory

Relay

Motor

27
Q

What is the function of a sensory neuron?

A

to take information from the body to the CNS

28
Q

What is the function of a relay neuron?

A

to carry signals

29
Q

What is the function of a motor neuron?

A

To take information from the CNS to the body

30
Q

Define action potential

A

the electric signal in neurons

31
Q

Define a vesicle and give its function

A

a bubble of fat that encases a group of chemicals to either release them across a synapse or recycle them to make new chemicals

32
Q

Define a cell membrane

A

phospholipid barrier

33
Q

Define a neurotransmitter

A

chemical messenger

34
Q

Define a synaptic gap

A

the gap between neurons (synapse)

35
Q

Define a receptor

A

the site where neurotransmitters are received postsynaptic

36
Q

Define postsynaptic

A

after chemicals are released across the synapse

37
Q

Define presynaptic

A

before chemicals are released across the synapse

38
Q

Define an exitatory neurotransmitter

A

a positively charged neurotransmitter that increases the activity of the neuron

39
Q

Define an inhibitory neurotransmitter

A

a negatively charged neurotransmitter that decreases the activity of a neuron

40
Q

What are the main structural features of an axon?

A

Nodes

Myelin sheath / schwann cell

motor / sensory neurons

41
Q

Define a node and give its function

A

The gap between the schwann cells

Allows new connections

Allows chemicals to alter signal and diffuse into the cell

42
Q

Define a schwann cell and give its function

A

The cell insulating the neurons in the axon

Made of a myelin sheath (fatty materials)

It protects the action potential

43
Q
A