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telencephalon
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The telencephalon includes these 4(5?)
cerebral hemisphere
basal ganglia & lateral ventricle
cortex
subcortical white matter
The subcortical white matter (part of telencephalon) consists of
association fibers - axons connecting diff regions of SAME hemi
commisural fibers - axons crossing the midline
projection fibers - axons carrying incoming/outgoing info to structures in other areas of CNS
The cerebral cortex is the center of higher functioning
Each hemisphere is made up of ______ & ______ areas
Primary areas - motor & sensory
Association areas - unimodal & multimodal
How thick is the cortex (grey matter [neurons] covers surface of hemispheres)
2-4 mm thick
The cortex receives input from _____
The cortex sends output to _______
input from
- thalamus and other cortical areas
output to
- cortex, basal ganglia, thalamus, cerebellum, & brainstem/spinal cord
Name the 6 cortical latyers (pial surface to deep)
I - Molecular layer
II - External granular layer
III - External pyramidal layer
IV - Internal granular layer - most prominent in somatosensory cortex (POST CENTRAL GYRUS)
V - Internal pyramidal layer - most prominent in primary motor cortex
VI - Multiform later
Which cortical layer consists of mostly axons running parallel to surface (few neurons)
I - Molecular Layer
Which cortical layer is the primary target of ascending sensory infro (from thalamus)
IV - Internal Granular Layer - somatosensory cortex
which layer consists of small granule (sensory) cells and small pyramidal (motor) cells
II - External Granular Layer
which layer consists of medium to large pyramidal cells
V - internal pyramidal layer
which layer is the source of upper motor neurons
Internal Pyramidal Layer
which layer consists of small to medium pyramidal cells
III - external pyramidal
which cortical layers are the source of association/commisural fibers
II & III (External Granular and External Pyramidal)
Author
MrsWood
ID
6518
Card Set
telencephalon
Description
Neuroanatomy
Updated
2010-02-10T01:44:02Z
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