Summary
Summary Neuro week 4
- Course
- SCMD3000 (SCMD3000)
- Institution
- University Of The Witwatersrand (wits)
Summary of 18 pages for the course SCMD3000 at wits (Summary.)
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Week 4Basal Ganglia/ Corpus Striatum
- Important for posture and movement
- Components:
Caudate nucleus
Putamen
Globus Pallidus (Pallidum)
- Grouped according to anatomical position:
Putamen + Globus Pallidus = Lentiform
nucleus
o Lie next to each other
- Grouped according to function:
Putamen + Caudate nucleus = Striatum/ Neostriatum
o Separated by the internal capsule anterior limb
o But functionally very similar
Part Position Function
Striatum
- Lateral to the internal capsule & Globus Pallidus - Receives most motor input of
Putamen - From medial to lateral on horizontal section: Corpus Striatum parts from the
Internal capsule > Globus Pallidus > Lateral motor cortex of frontal lobe
medullary lamina (Segment of white matter
separating GP & Putamen) > Putamen > External
capsule > Claustrum > Extreme capsule > Cortex of
insula
- Large head & tapering, curved tail
Caudate - Head:
nucleus Is separated from the Putamen by the internal
capsule
But at anterior end is continuous with Putamen
beneath anterior limb of internal capsule
o Most anterior part of Striatum has
connections with Limbic system
Forms a bulge in the lateral ventricle anterior horn
lateral wall
- Tail:
Passes posteriorly following curvature of lateral
ventricle > Ends by sitting in the roof of inferior
horn
- Medial to Putamen where it is separated by the Lateral
Globus Pallidus medullary lamina
- Medial/ internal segment
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