Term
What are the 3 types of cortex?
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Definition
Archicortex
Paleocortex
Neocortex |
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Term
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Definition
contains 3 layers
simple - not a lot in human brains
found in the hippocampus |
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Term
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Definition
3+ layres
found in the olfactory cortex |
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Term
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Definition
6 layers
I. Molecular - local projections/dendrites (closest to pia)
II. External granular layer
III. External Pyramidal Layer
IV. Internal granular layer
V. Internal Pyramidal Layer
VI. Multiform (polymorphic) layer (closest to white matter) |
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Term
What are the 3 categories of White Matter? |
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Definition
Projection fibers
Association fibers
Commissural fiers |
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Term
What areas to projection fibers connect? |
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Definition
they connect the cortex with sub cortical areas |
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Term
Name some projection fibers |
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Definition
Corona Radiata
Internal Capsule
Cerbral Peducles/Crus Cerebri |
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Term
Where is Corona Radiata located? |
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Definition
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Term
Where is the Internal Capsule located? |
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Definition
contains the same axons as the Corona Radiata
located lateral to the thalamus |
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Term
Where are the Cerebral Peducles/Crus Cerebri located |
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Definition
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Term
What are the 3 parts of the Internal Capsule? |
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Definition
Anterior Limb
Genu
Posterior Limb |
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Term
What do Association Fibers connect? |
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Definition
they connect cortical areas on the same side of midline (ipsilaterally)
short association fibers connect adjacent gyri
long association fibers connect different lobes |
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Term
Name some specific association fibers |
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Definition
Arcuate Fasciculus (superior longitudinal fasicuclus)
Uncinate Fasciculus
Cingulum |
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Term
what does the Aarcuate fasciculus connect? |
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Definition
connects the frontal lobe to the pariatel and temporal and occipital lobe |
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Term
what does the Uncinate Fasciculus connect? |
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Definition
it connects the frontal and temporal lobes - goes around the lateral sulcus |
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Term
What does the Cingulum connect? |
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Definition
it projects from the cingulate gyrus and goes around - superiorly - the corpus callosum; connecting the frontal and temporal lobes, superior to the uncinate fasciculus |
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Term
What do Commissural Fibers connect? |
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Definition
They connect the hemispheres - commissural fibers cross over from one hemispher to the other |
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Term
Name some specific commissural fibers |
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Definition
Corpus Callosum
Anterior Commissure |
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Term
What does the Corpus Callosum do? |
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Definition
it connects all 4 lobes
"the hard body"
has 4 parts: rostrum, genu, body, and splenium |
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Term
What does the Anterior Commissure do? |
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Definition
it connects the anterior parts of the temporal lobes - part of the olfactory system |
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