Trans - Cerebrum Flashcards
precentral gyrus - function
primary motor cortex
separates frontal and parietal lobes from temporal lobe
Sylvian fissure
3 frontal gyri seen in lateral view
- superior frontal gyrus
- middle frontal gyrus
- inferior frontal gyrus
sulcus superior to inferior frontal gyrus
inferior frontal sulcus
sulcus inferior to superior frontal gyrus
superior frontal sulcus
3 parts of inferior frontal gyrus
(from posterior to anterior)
- pars opercularis
- pars triangularis
- pars orbicularis
pars triangularis is associated with this landmark
anterior Sylvian point
sulcus anterior to precentral gyrus
precentral sulcus
most medial frontal lobe gyrus in inferior view
gyrus rectus
sulcus immediately lateral to gyrus rectus
olfactory sulcus
what structure is within the olfactory sulcus
olfactory nerve
gyrus immediately lateral to gyrus rectus
orbital gyrus
2 parts of orbital gyrus
- medial orbital gyrus
2. lateral orbital gyrus
[T/F] the parts o the orbital gyrus are sharply delineated
F
what divides the 2 parts of the orbital gyrus
orbital sulcus
postcentral gyrus - function
primary somatosensory cortex
sulcus immediately posterior to postcentral gyrus
postcentral sulcus
what structure is continuous with the postcentral gyrus
superior parietal lobule
what structures do the intraparietal sulcus separate
superior and inferior parietal lobules
2 components of inferior parietal lobule
- supramarginal gyrus
2. angular gyrus
supramarginal gyrus caps what structure
Sylvian fissure
angular gyrus caps what structure
superior temporal sulcus
3 temporal gyri seen in lateral view
- superior temporal gyrus
- middle temporal gyrus
- inferior temporal gyrus
what separates superior and middle temporal gyri
superior temporal sulcus
what separates middle and inferior temporal gyri
inferior temporal sulcus
what separates parietal and occipital lobes
parieto-occipital sulcus
3 poles of the brain
- frontal pole
- temporal pole
- occipital pole
the inferior temporal gyrus is bound by what gyrus superiorly? infero-medially?
superiorly - middle temporal gyrus
infero-medially - fusiform gyrus
another name for fusiform gyrus
lateral occipitotemporal gyrus
another name for lingual gyrus
medial occipitotemporal gyrus
separates fusiform and lingual gyri
collateral sulcus
calcarine fissure separates which two structures
cuneus and occiput
what separates the inferior temporal gyrus and fusiform gyrus
occipito-temporal sulcus
most medial gyrus of temporal lobe
parahippocampal gyrus
the uncus is part of what gyrus
parahippocampal gyrus
paracentral lobule is continuous with which structures
precentral and postcentral gyri
most medial gyrus of the brain
cingulate gyrus
part of the brain covered by the operculum
insular cortex
structure immediately superior to the cingulate gyrus
cingulate sulcus
structure immediately inferior to the cingulate gyrus
corpus callosum
where is the transverse temporal gyrus of Heschl located?
inner surface of superior temporal gyrus
frontal lobe - general functions
- primary motor cortex
- premotor and supplementary motor cortexes
- production of written and spoken language
- executive and higher functions
Broca’s area - function
production of written and spoken language
Broca’s area - where is it located
pars triangularis
pars opercularis
parietal lobe - general function
- somatosensory cortex
- language comprehension
- spatial orientation and attention
temporal lobe - general function
- primary auditory cortex
- language comprehension
- higher order visual processing
- learning and memory
superior temporal gyrus - function
primary auditory cortex
Wernicke’s area - function
comprehension of written and spoken language
Wernicke’s area - where is it located?
posterior portion of left superior temporal gyrus
the inferior surface of the temporal lobe is involved in:
higher order visual processing
occipital lobe - general function
- primary visual cortex
2. visual association cortex
2 gyri in limbic lobe
cingulate and parahippocampal gyri
limbic lobe - general function
emotion, drive, memory
projection fibers - connect what structures
connect brain with the rest of CNS
commissural fibers - connect what structures
connect hemispheres of brain
association fibers - connect what structures
connect different parts of the same hemisphere
centrum semiovale is what type of fiber
projection fiber
corona radiata is what type of fiber
projection fiber
anterior limb of internal capsule is oriented in what direction
anteroposteriorly
posterior limb of internal capsule is oriented in what direction
superoinferiorly
anterior limb of internal capsule connects what structures
anterior nucleus (thalamus) and cingulate gyrus
posterior limb of internal capsule connects what structures
VA and VL nuclei (thalamus) and motor cortex
frontopontine fibers are in what limb
anterior
corticospinal fibers are in what limb
posterior
corticobulbar fibers are in what limb
posterior
retrolenticular fibers contain:
optic radiation
sublenticular fibers contain:
auditory radiation
parts of corpus callosum
- genu
- body
- splenium
anterior fibers of anterior commissure connect:
olfactory bulb and nuclei
posterior fibers of anterior commissure connect:
middle and inferior temporal gyri
cingulum is what type of fiber
association fiber
cingulum runs from where to where
from paraolfactory gyri to parahippocampal gyri
uncinate fasciculus connects:
orbital and inferior frontal gyri with anterior temporal lobe
longest association fiber tract
superior longitudinal fasciculus
another name for acruate fasciculus
superior longitudinal fasciculus
superior longitudinal fasciculus connects:
frontal lobe to every other lobe
inferior longitudinal fasciculus connects:
occipital and temporal lobes
basal optic nucleus of Meynert contains:
cholinergic neurons projecting to neocortex
Brodmann area of primary motor cortex
4
Brodmann area of premotor cortex
6
Brodmann area of Broca’s area
44
Brodmann area of Wernicke’s area
22
Brodmann area of primary visual cortex
17
Broddmann area of primary somatosensory cortex
1, 2, 3