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(Grey matter vs white matter (Both (Glial cells), White Matter (CNS…
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Glia
Non Neuron Cells
CNS
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Other
Pituicytes
Posterior pituitary
- Glail cells posterior pituitary
Enteric glial cells
- Enteric ganglia in myenteric and submucosal plexuses of ENS
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Satellite cells
- Satellite cells cover neuron cell bodies in sensory, sympathetic and parasympatheitc ganglia
Histology Astrocyte, oligodendrocyte and mircoglial cells
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CNS
- Retina: Rods, cones, retinal ganglia + optic nerves
- Epithelial linings of ciliary body and iris of eyes
- Astrocytes
- Oligodendrocytes
- Epnedymal cells
- Microglial cells
PNS
- Neurological cells
- Schwaan cells
Blood Brain Barrier
necessitates membrane spanning Proteins for selectively controlling movement solutes from Blood into CNS
- Barrier further reinforced Foot processes Astrocytes: contacting basal membrane and lining Blood vessels
- Endothelial cells lining blood vessels CNS
- Tight junctions prevent free exchange chemicals from blood in neural compartment
Myelination
- Lipid rich insulates axons
CNS Myelination
Oligodendrocyte
- 1 Oligodendrocyte per 3-50 nerve fibres (axons)
- Each Oligodendrocyte may surround other fibres without forming myelin sheaths
PNS Myelination
Schwaan
- 1 Schwaan cell per axon
- 1 Schwaan cell per internode
Histology cerebellar cortex
Hindbrain: Cellular organisation different parts same layer extremely uniform
- Highly modular, lots of stripes
- Cortex gray matter
- Pia mater
- Molecular layer
- Purkinje cell layer
- Granule cell layer
- Medulla white matter
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