Bio psych Flashcards

1
Q

What is Peripheral NS?

A

Neuron outside CNS linking it to other parts of body
Somatic and Autonomic NS

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2
Q

Somatic NS function

A

Transmits between receptors and CNS
Skeletal voluntary movement

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3
Q

Autonomic NS function

A

Involuntary body movement
controls vital organs

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4
Q

Sympathetic NS function

A

Fight or flight response, increase adrenaline, heartrate, respiration, dilute eyes

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5
Q

Parasympathetic NS function

A

Maintain homeostasis, decrease adrenaline, heartrate, respiration

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6
Q

Structures of CNS

A

Brain, spinal cord

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7
Q

Structure of Neurons

A

Dendrites, cell body, axon, axon terminals, myelin sheath

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8
Q

What are Neurotransmitters?

A

Chemicals that facilitate neuron of messages between neurons
Can be Inhibitory or Exhibitory

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9
Q

Inhibitory vs Exhibitory

A

Exhibitory - Increase probability post-synaptic neuron will produce action potential
Inhibitory - Decrease probability

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10
Q

Stages of neurotransmission

A
  1. Action potential occurs in pre synaptic neuron
  2. Neurotransmitters released into synapse
  3. Diffuse across synapse to terminal on post neuron
  4. Post synaptic neuron repropagate action potential if exhibitory threshold reached
  5. Reuptake occurs
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11
Q

Parts of the brain

A

Forebrain (Cerebral cortex, Thalamus, Hypothalamus), Hindbrain(Medulla, Cerebellum) and Midbrain(Reticular formation)

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12
Q

Part of Cerebral cortex

A

Frontal, Parietal, Occipital and Temporal lobes

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13
Q

Function of frontal lobe

A

Personality, high order functions

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14
Q

Parts of frontal lobe

A

Prefrontal cortex, primary motor cortex, Broca’s area(Left)

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15
Q

Function of Broca’s area

A

Production of fluent speech

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16
Q

If Broca’s area was damaged

A

Expressive Aphasia, speech not fluent, incorrect grammar

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17
Q

Function of Prefrontal cortex

A

Executive functions e.g attention, problem solving, memory, decision making

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18
Q

Function of primary motor cortex

A

Voluntary body movement
Contralateral motor input

19
Q

Function of Parietal lobe

A

Process sensory info, perception, co ordination

20
Q

Primary sensory cortex function

A

Voluntary movement of certain parts
Creates meaning from raw info

21
Q

Function of Occipital lobe

A

Processes visual info
Contains primary visual cortex

22
Q

Function of primary visual cortex

A

Process visual info

23
Q

Function of Temporal lobe

A

Auditory info, long term memory, facial recognition, speech recognition

24
Q

Function of Primary Auditory cortex

A

Process auditory info

25
Q

Function of Wernicke’s area

A

Understand language and comprehension

26
Q

If Wernicke’s area was damaged

A

Reception aphasia, unable to understand speech

27
Q

Function of Thalamus

A

processes and relays sensory info

28
Q

Function of Hypothalamus

A

Arousal, thirst, hunger, etc.

29
Q

Function of Medulla

A

Regulate/control breathing, heartrate, digestion, etc.

30
Q

Function of Cerebrum

A

Movement, Balance and coordination

31
Q

Function of Reticular formation

A

arousal, integration and relay center, pain modulate, ocular movement

32
Q

Function of Corpus callosum

A

Connects right and left hemisphere

33
Q

What is EEG?

A
  • Many small electrode placed on head
  • Detect electrical brain activity
  • recording in graph as waves
  • Use to diagnose disorders
34
Q

Pros and Cons of EEG

A

Pros
- Non intrusive
- Easy and inexpensive
Cons
- Cannot be localized
- Limited detail

35
Q

What is CT(or CAT)?

A
  • X rays and computers
  • Create 3d slices
36
Q

Pros and Cons of CT

A

Pros
- Quick
- Non- intrusive
Cons
- less clear than MRI
- ionizing radiation

37
Q

What is MRI?

A
  • Uses strong magnetic field
  • Detailed 3d image
  • Radio waves detect hydrogen atoms
38
Q

Pros and Cons of MRI

A

Pros
- Precise localization
- Non-intrusive
Cons
- Expensive
- loud

39
Q

What is FMRI

A
  • detects changes in oxygen in the brain
  • blood is magnetic and detected by magnetic field
  • color image
40
Q

Pros and Cons of FMRI

A

Pros
- No radiation
- Fast
- Detailed image of functioning brain
Cons
- Expensive

41
Q

What is PET

A
  • Inject sugar into patient
  • Images of activity from glucose consumption
  • Colored image
42
Q

Pro and Cons of PET

A

Pros
- Non-intrusive
- Detailed image
Cons
- Affects health
- Slow and expensive

43
Q

Bio psych case studies

A

Phineas Gage
Walter Freeman
Roger Sperry