Neurons & Glia Chapt.2
Last Modified: 2011-12-02
uses a silver solution to stain the entire neuron, but only a snall porportion of neurons take up the stain.
Green Fluorescent Protein (GFP) expression
Brainbow: incorporation in DNA & see many colors
Soma- cellular machinery
Ends at Axon Terminal
Presynaptic-vesicles(space b/w synaptic cleft)
DNA transcription >mRNA>translation->protein
Most of the genes in the genome are only expressed in the cells of the brain
Free ribosomes can exist in dendrites
packaging into vesicles
Neurofilaments-intermediate in size-long protein strands
Microfilaments-two actin polymers
Fast Axoplasmic transport (1000/ day)-Requires ATP
Antegrade-From cell body to synapse-mediated by kinesin
Retrograde=back to cell body mediated by dynein
Motor Neurons(for synapse with muscles
Interneurons(connections with neurons)
Oligodendrocytres Central Nervous System
Schwann Cells-Peripheal Nervous System
Forms Myelin sheath around axons
Periodically intereupted by Nodes of Ranvier
Most brain tumors are caused by unregulated growth of glial cells-gliomas
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