1. Anatomy of the brain Flashcards

1
Q

What is biopsychology?

A

It is the scientific study of the biology of behaviour (Pinel, 2018). It systematically investigates overt behaviour and underlying internal processes. A teamwork effort where the knowledge of behaviour and behavioural research is crucial.

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2
Q

What are the “bio” branches of biopsychology?

A
Neuroanatomy
Neuro-endocrinology 
Neuro-chemistry
Neuropathology
Neuropharmacology
NeuroPhysiology
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3
Q

neuroanatomy

A

structure nervous system

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4
Q

neuroendocrinology

A

nervous/endocrine system

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5
Q

neurochemistry

A

chemical basis of neural activity

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6
Q

neuropathology

A

nervous system disorders

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7
Q

neuropharmacology

A

effects of drugs

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8
Q

neurophysiology

A

function nervous system

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9
Q

what are the psychological branches of biopsychology?

A
Physiological psychology
psychopharmacology
neuropsychology
psychophysiology 
cognitive neuroscience
competitive psychology
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10
Q

Physiological psychology

A

studies behaviour based on neural mechanisms - animal research

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11
Q

psychopharmacology

A

studies neural activity and behaviour manipulated with drugs - animal and human research

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12
Q

neuropsychology

A

studies psychological effects of brain damage in human patients

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13
Q

psychophysiology

A

studies the relation between physiological activity and psychological processes - human research

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14
Q

cognitive neuroscience

A

studies the neural bases of cognitive (higher intellectual processes; e.g. memory and attention); human research

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15
Q

competitive psychology

A

studies the biological basis of behaviour, often times across species

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16
Q

what are the two divisions of the brain

A

central nervous system and peripheral nervous system

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17
Q

what are the divisions of the central nervous system

A

brain and spinal cord

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18
Q

what are the divisions of the peripheral nervous system?

A

somatic nervous system and autonomic nervous system

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19
Q

what are the divisions of the somatic nervous system and autonomic?

A

afferent nerves and efferent nerves

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20
Q

what are the divisions of the efferent nerves in the autonomic nervous system

A

sympathetic nervous system and parasympathetic nervous system

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21
Q

what is afferent?

A

CNS approach (approach)

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22
Q

what is efferent?

A

away from the CNS (exit)

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23
Q

how much does the adult human brain weigh?

A

about 3 pounds (1.3-1.4 kgs)

about 2% of the total body weight

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24
Q

how much energy does the brain consume?

A

about 20% of the total energy consumption

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25
Q

what is the surface area of the cerebral cortex?

A

about 2500sq. cm (0.25sq.m ~2.5sq.ft

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26
Q

how many neurons are in the adult brain?

A

90 billion

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27
Q

how many connections are estimated to be in the human brain?

A

100 trillion connections

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28
Q

meninges

A

membranes around the brain

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29
Q

what are the three kinds of meninges?

A

dura matter
arachnoid menix
pia matter

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30
Q

what are cerebrospinal fluids?

A

acts as shock absorber; mediates between blood vessels and brain tissue

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31
Q

from the scalp, what is the order do the kinds of meninges?

A

(scalp)
(skull)

  1. dura matter
  2. arachnoid meninx
  3. pia matter

(cortex)

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32
Q

what are protectors of the brain?

A

meninges
cerebrospinal fluid
ventricular system
choroid plexus secretes CST

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33
Q

what is in the choroid plexus secretes CSF?

A

lateral ventrical
third ventrical
fourth ventricle

34
Q

what is the total volume of cerebrospinal fluid in the brain?

A

125-150mL

35
Q

how much cerebrospinal fluid is produced?

A

400-500 mL produced every day

36
Q

what does cerebrospinal fluid look like?

A

clear and colourless

37
Q

blood-brain barrier

A

specially structured cerebral blood vessels with tightly packed walls, which prevents influx of many toxic substances (but not dependent on size!). can be penetrated

38
Q

anterior - posterior

A

front - back

39
Q

dorsal - ventral

A

toward top / at back - under/belly/front

40
Q

medial/lateral

A

towards the middle/towards the sides

41
Q

what are the planes of the brain?

A

sagattal plant
horizontal plane
cross section
frontal plant

42
Q

horizontal plane

A

cuts the brain in half horizontally

43
Q

frontal plane

A

cuts the brain in half vertically from left to right

44
Q

cross section

A

cuts horizontally across the brain stem

45
Q

what are the major divisions of the brain?

A

forebrain
midbrain
hindbrain

46
Q

sections of the forebrain

A

telencephalon

diencephalon

47
Q

another word for midbrain

A

mesencephalon

48
Q

sections of the hindbrain

A

metencephalon

myelencephalon

49
Q

telencephalon

A

two (mostly) symmetrical hemispheres.

50
Q

what are the sections of the telencephalon?

A
longitudinal fissure
precentral gyrus (primary motor cortex)
central fissure
postcentral gyrus (somatosensory cortex)
51
Q

sulcus and fissure

A

grooves in the brain

52
Q

gyrus

A

bumps on the brain

53
Q

what are the major fissures?

A

central fissure
lateral fissure
longitudinal fissure

54
Q

what are the major gyrus?

A

precentral gyrus
postcentral gyrus
superior temporal gyrus

55
Q

frontal lobe

A

executive functions, thinking, planning, organising and problem solving,emotions and behavioural control, personality

56
Q

motor cortex

A

movement

57
Q

sensory cortex

A

sensations

58
Q

parietal lobe

A

perception, making sense of the world, anthmetic, spelling

59
Q

occipital lobe

A

vision

60
Q

temporal love

A

memory, understanding language

61
Q

what re the major divisions of the cerebral cortex?

A
frontal lobe
motor cortex
sensory cortex
parietal lobe
occipital lobe
temporal lobe
62
Q

limbic system

A

part of telecephalon

generally thought to be implied in motivated behaviour (feeding, fighting, flight, sexual behaviour).

63
Q

what are the main structures researched in the limbic system?

A

amygdala

hippocampus

64
Q

basal ganglia

A

part of telencephalon

generally thought to be implied in voluntary motor responses and decision making.

65
Q

what structure of the brain is considered a part of the basal ganglia and limbic system?

A

the amygdala

66
Q

what is research on the basal ganglia particularly interested in?

A

pathway from substantia nigra (midbrain or mesencephalon) to striatum (putamen plus caudate) - Parkinson’s disease

67
Q

what is in the diencephalon?

A

thalamus and hypothalamus

68
Q

thalamus

A

consists of sensory relay nuclei that project information in a two-way fashion

69
Q

hypothalamus

A

implied in motivated behaviour through hormone regulation from pituitary gland

70
Q

what is in the hypothalamus?

A

optic chiasm and mammillary bodies

71
Q

optic chiasm

A

point where optic nerves meet (contralateral and ipsilateral)

72
Q

mammillary Bodies

A

recollective and recognitional memory function

73
Q

parts of the mesencephalon

A

tectum and tegmentum

74
Q

parts of the tectum

A
inferior colliculi (auditory function)
superior colliculi (visual-motor function)
75
Q

parts of the tegmentum

A

periaqueduct grey

substantia nigra

76
Q

periaqueduct grey

A

grey matter around aqueduct that connects 3rd and 4th ventrical; pain-reducing effects

77
Q

parts of the metencephalon

A

reticular formation

cerebellum

78
Q

reticular formation

A

reaches from posterior boundaries of myencephalon to anterior boundary of mesencephalon
collection of nuclei with variety of functions; creates a bulge = pons

79
Q

cerebellum

A

litle brain

important sensorimotor system; likely broader function due to observed cognitive deficits in cerebellar damage

80
Q

myelencephalon (aka medulla)

A

comprised largely of tracts carrying signals between brain and body

81
Q

includes reticular formation

A

reaches from posterior boundary of myencephalon to anterior boundary of mesencephalon

collection of nuclei with variety of functions