Topography of the brain Flashcards
What are the commissural fibres?
connect right and left hemispheres, functionally related structures
Name the key commissural fibres
corpus callosum, anterior, hippocampal commissures
name parts of corpus callous
Splenium – occipital cortices
Body
Genu
Rostrum – frontal lobes
What are the lobes of the cerebrum
frontal parietal temporal occipital limbic
What is the cerebrum
The cerebrum: right and left hemispheres comprising grey and white matter.
Frontal lobe
Occipital lobe
Temporal lobe
Parietal lobe
lobes - frontal name three key areas
Frontal lobe:
Premotor cortex (area 6)
Frontal eye field (area 8)
Broca’s area (area 44, 45)
name two key areas of occipital lobe
Occipital lobe:
Primary visual cortex (area 17)
Visual association cortex
name 3 key areas of temporal lobe
Temporal lobe:
Primary auditory cortex (area 41, 42)
Auditory association cortex (Wernicke’s area)
where is insula and what role does it have
Insula: deep to the lateral sulcus/fissure; desire, craving, addiction, neuropsychiatric disorders
what am I? “connecting white matter tracts between hemispheres”
Corpus callosum: connecting white matter tracts (commissural fibres) between hemispheres.
What is the fornix
Fornix: projection fibres connecting the mammillary bodies with the hippocampi; part of the limbic system.
name abc
a inferior parietal lobule
b intraparietal sulcus
c superior parietal lobule
name def
d post central sulcus
e central sulcus
f pre central sulcus
name ghi
g superior frontal gyrus
h middle frontal gyrus
I inferior frontal gyrus
name jk
j pre-central gyrus
k post-central gyrus
Name brain areas AB
A somatosensory association cortex
B primary somatosensory cortex 1,2,3
Name brain areas CDEFG
C primary motor cortex 4
D pre-motor cortex 6
E frontal eye field 8
F pre-frontal cortex
G brocca’s area 44/45
What is the corpus striatum comprised of?
Striatum and lentiform nucleus
What is the striatum formed of
Caudate nucleus and putamen
what forms the lentiform nucleus?
Putamen and globus pallidus (internen and externen)
What two things is the putamen part of
Striatum and lentiform nucleus
What are basal ganglia
Collections of cell bodies (grey matter) deep within each hemisphere.
Function: regulate motor output, motor learning
In this coronal view what is the structure
internal capsule (white matter tracts, projection fibres to sub cortical structures)
what are purple structure(s)
coronal slice
Basal ganglia - sub cortical grey matter either side of internal capsule
name these areas of this coronal slice
what basal ganglia is this
Vasculature of brain - what is the ACA and what does it supply?
Anterior cerebral artery (ACA) – medial frontal and parietal lobes
Vasculature of brain - what is the MCA and what does it supply?
Middle cerebral artery (MCA) – lateral frontal, parietal, temporal lobes, insula
What does the Anterior communicating artery do?
Anterior communicating artery – anastomose ACA
What do the vertebral arteries (R and L) feed?
Posterior circulatory system: vertebral arteries (R and L).
Unite at pontomedullary junction to form basilar artery.
