Neuroanatomy Lecture 3: Cerebral Hemispheres Flashcards

(38 cards)

1
Q

which level of meninges goes into the sulci

A

pia mater

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2
Q

what are the red and blue bits
what do they control

A

red = PREcentral gyrus- motor
blue = postcentral gyrus- sensory

front of head = start

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3
Q

what is the green sulcus

A

lateral sulcus

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4
Q

name the purple and blue bits

A

purple = parieto-occipital sulcus

blue= cingulate sulcus

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5
Q

name the green bit

A

hoppicampus

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6
Q

whats the green bit pointing too

A

insula

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7
Q

what Broadman area is the precentral gyrus (motor)

A

area 4

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8
Q

association area of motor- speech

Broadman area

A

brocas

44,45

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9
Q

association area of motor- cognitive

Broadman area

A

Prefrontal cortex–cognitive functions of higher order-intellect,judgement, prediction,planning

6

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10
Q

basic homonculus- order of areas from inside to out

A

inside- feet
leg
trink
arm
hand
outside- face

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11
Q

what broadman area is post central gyrus- sensory

A

3,1,2

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12
Q

2 association areas of post central gyrus

A

Superior parietal lobule

Inferior parietal lobule

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13
Q

association of post central gyrus: what does Superior parietal lobule do x2

A

Interpretation of general sensory information (sensory association area)

conscious awareness of contralateral half of body.

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14
Q

association of post central gyrus: what does Inferior parietal lobule do x2

A

Interface between somatosensory cortex and visual and auditory association areas.

In dominant hemisphere, contributes to language functions

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15
Q

what happens when theres a lesion in the parietal lobe x4

A

*Hemisensory neglect
*Right-left agnosia- can’t recognize or identify objects or persons
*Acalculia
*Agraphia

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16
Q

where is the primary auditory cortex found

broadman number

A

superior temporal gyrus

41, 42

17
Q

auditory association area
what it does
where it is

A

Wernicke’s area
understanding spoken word
posterior to 41,42

18
Q

where is the smell centre

A

inferior to auditory cortex 41,42

19
Q

where is the primary visual cortex

Broadman’s area

A

either side of calcarine sulcus

17

20
Q

where is the visual association area
what does it do
broadmans area

A

rest of occipital lobe

interpretation of vision

18, 19

21
Q

name the parts of the limbic lobe x5

A

green = cingulate gyrus
red = hippocampus
pink = parahippocampal gyrus
brown = olfactory tract
purple = amygdala

22
Q

what does the limbic system control

A

memory and emotional aspects of behaviour

23
Q

what association area is only found in dominant hemisphere

24
Q

what lobe is likely to be effected in
brocas
wernikes aphasia

and what is likely to be associated

A

brocas- frontal
likely to also have paralysis

Wernicke’s- temporal
no paralysis but possibly hearing

25
3 types of myelinated axon fibres bundled into tracts in brain
commissural association projection
26
what do commissural do
connect corresponding areas of the two hemispheres. (Corpus callosum)
27
what do association areas do
connect one part of the cortex with the other- primary to association area
28
what do projection fibres do where are they found
run between the cerebral cortex and various subcortical centres found in corona radiata and the internal capsule.
29
list the basal ganglia x3
caudate nucleus lentiform Substantia nigra
30
what are the 2 blue bits
dark blue = lateral ventrical light blue = 3rd ventrical
31
whats the orange bit
thalamus
32
whats the red bit
caudate nucleus
33
whats the grey blue and purple bits
grey blue = putamen light purple = globus pallidus purple = lentiform nucleas
34
whats the green bit
internal capsule
35
whats the black and red bit
black = substantia nigra red = red nucleas
36
what parts of the basal ganglia are input or output what do they receive/send output from/to
input = caudate and putamen "put em in" motor and thalamus output = globus pallidus and substantia nigra thalamus eventually to motor cortex
37
main purpose of substantia nigra
regulates initiation and termination of movements
38
3 diseases of basal ganglia
Parkinson’s chorea athetosis