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Definitions

Unit 3

TermDefinitionFunction
Soma cell body; Smooth or Stellate
Chromatophilic Substance clusters of Ribosomes
Neurofibrils Microtubules extending INTO Axon Mitochondria
Ganglia where Soma are concentrated
cinemark.com (blank)
Dendrites SHORT, highly Branched extensions of the cell body carry impulses TOWARD the cell body
Axon LONG, slender extension of the cell body carry impulses AWAY from the cell body - insulated by Neuroglia
Terminal Filament Synapse or Neuromuscular Junction
Synapse Terminal Filament when joined to a DENDRITE of another Neuron
Neuromuscular Junction Terminal Filament when joined at a Muscle Cell
Amitotic the direct method of cell division
Neuroglia Supportive cells among/around neurons
Schwann Cells wrapped around Peripheral provide support and axon insulation; improve SPEED of nerve impulse conduction
Nodes (of Ranvier) GAPS between Schwann cells serve as relay points for nerve impulses
Oligodendrocytes wrapped around central neurons provide MYELINATION similar to Schwann cells
Astrocytes crowded among central neurons Support and Link neurons to blood CAPILARIES - regulate DIFUSSION; contribute to BLOOD-BRAIN Barrier
Created by: kristel387
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