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control > L8 - forebrain > Flashcards

L8 - forebrain Flashcards

1
Q

origin or forebrain

A

prosencephalon

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2
Q

contents of forebrain

A

inner and outer

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3
Q

contents of inner brain

A

diencephalon

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4
Q

contents of outer brain

A

telencephalon

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5
Q

contents of diencephalon

A

thalamus

hypothalamus

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6
Q

contents of telencephalon

A
  • cerebral cortex and CN1
  • corpus striatum
  • limbic structures
  • subcortical fibres
  • cerebral hemisphers
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7
Q

role of forebrain

A

responsible for a higher level processing such as memory, cognition, learning, integration…etc

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8
Q

what is the telencephalon

A

two swellings on either side of the midline connected via the lamina terminalis

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9
Q

development of the diencephalon

A

swellings of the lateral aspect of the central canal, the lumen of the central canal is diminished , forming the diencephalon

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10
Q

location of thalamus on the diencephalon

A

dorsally

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11
Q

location of hypothalamus on the diencephalon

A

ventrally

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12
Q

which ventricle lies in the middle of the diencephalon

A

3rd

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13
Q

location of inferior horn of lateral ventricle

A

temporal lobe

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14
Q

location of anterior horn of lateral ventricle

A

frontal lobe

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15
Q

location of posterior horn of lateral ventricle

A

occipital lobe

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16
Q

role of thalamus

A

relay station between parts of CNS

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17
Q

role of hypothalamus

A

autonomic and neuroendocrine functions

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18
Q

role of subthalamus

A

functionally part of basal nuclei - involved in motor control

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19
Q

role of epithalamus

A

includes pineal gland - secretes melatonin

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20
Q

basal nuclei

A

cell bodies in the cns

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21
Q

what is the thalamus composed of

A

grey matter

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22
Q

how are the thalami connected

A

interthalamic adhesion / mass intermedia

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23
Q

motor processing of thalamus

A

through connections with basal ganglia and cerebellum

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24
Q

nuclei and internal organisation of thalami

A

anterior nuclear group
medial nuclear group
lateral nuclear group

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25
Q

lateral nuclear group of the thalami

A

ventral posterior lateral
ventral posterior medial
lateral geniculate
medial geniculate

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26
Q

role of ventral posterior lateral

A

receives information from somatic sensory system and send information to primary sensory cortex

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27
Q

role of ventral posterior medial

A

recieve information from somatic sensory system and send information to primary sensory cortex

28
Q

lateral geniculate

A

receives information from vision and sends to visual cortex

29
Q

medial geniculate

A

connects auditory apparatus and project to auditory cortex

30
Q

cheif structure of homeostasis and autonomic control

A

hypothalamus

31
Q

anterior border of hypothalamus

A

anterior commissure and lamina terminalis

32
Q

anterior and ventral border of hypothalamus

A

optic chiasma

33
Q

location of limbic lobe

A

sits on the medial surface and expands into the 4 surrounding lobes

34
Q

limbic system

A

memory and emotion

35
Q

where does CN1 develop

A

telencephalon

36
Q

corpus striatum

A

internal structures of grey matter of each cerebral hemisphere
- involved in motor control

37
Q

what is the corpus striatum part of

A

basal ganglia

38
Q

structures within the corpus striatum

A
  • globus pallidus
  • putamen
  • caudate nucleus
39
Q

location of putamen within corpus striatum

A

more lateral

40
Q

shape of caudate nucleus

A

C shape with a little tail

41
Q

why does the corpus striatum appear stripy

A

caudate nucleus and putamen are separate so have cellular bridges connecting them

42
Q

location of caudate nucleis

A
  • head and body form lateral wall of lateral ventricle

- tail forms roof of inferior horn of lateral ventricle

43
Q

hemispheric limbic structures

A
  • hippocampus
  • fornix
  • amygdala
44
Q

hippocampus

A
  • looks like sausage

- connected to fornix

45
Q

location of fornix

A

arches over the thalamus

46
Q

Cumbria of fornix

A

bring white matter fibres from hippocampus and converge them to form the crus of the fornix more anteriorly

47
Q

shape of fornix

48
Q

columns of the fornix

A

white matter structures which connect efferent fibres and delve into maxillary bodies of hypothalamus

49
Q

amygdala

A

tiny nuclei

50
Q

which type of fibre does the fornix contain?

A

efferent and afferent

51
Q

classes of fibres in the white matter on the hemisphere

A
  • association
  • commissural
  • projection
52
Q

role of association fibres

A

interconnect areas within a hemisphere and adjacent gyri

53
Q

short association fibres

A

connect pre and post central gyri

54
Q

long association fibres

A

connect lobes of the brain

55
Q

role of commissural fibres

A

interconnect areas between hemispheres

56
Q

components of the corpus callosum

A

rostrum
genu
body
splenium

57
Q

anterior commisure

A

small commissural fibres which contain white matter between the hemispheres and forms a relationship with the hypthalamus

58
Q

hippocampal commissure

A

allows information from one hippocampus to each the other

59
Q

role of projection fibres

A

interconnection cerebrum with rest of CNS

60
Q

projection fibres - corona radiata

A

funnels down as the internal capsule - they are continuous

61
Q

what type of fibres are projection fibres

A

ascending and descending

62
Q

location of internal capsule

A

passes between head of caudate and lentiform nuclei

63
Q

posterior limb in internal capsule

A

between thalamus and lentiform nucleic laterally

64
Q

anterior limb of internal capsule

A

between head od caudate and putamen

65
Q

part of internal capsule that bends like a knee

A

genu of internal capsule

control (38 decks)

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