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The Nervous system
Fundamentals of nervous system and Nervous tissue
10
Physiology
Undergraduate 2
03/03/2014

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Term
Neurons
Definition
Excitable Nerve cells that transmit electrical signals.
Term
CNS
Definition
the brain and the Spinal cord which occupy the dorsal body cavity.
Term
PNS
Definition
  • Outside the CNS
  • Contsists mainly of the nerves that extend from the brain and spinal cord
  • has 2 functional sub divisions
  • Sensory/ afferent division
  • Motor/efferent div.also has 2 sub. div.
  • Somatic and Autonomic
Term
Nuclei
Definition
Clusters of cell bodies in the CNS
Term
Ganglia
Definition
Lie along the nerves in the PNS
Term
Tracts
Definition
Bundles of neuron processes when in the CNS
Term
Nerves
Definition
Bundles of Neuron Processes When in the PNS
Term
Dendrites and Axons
Definition
  • Types of Neuron processes
  • Diffe from each other in the structure and function of their Plasma membranes
Term
Nerve Fiber
Definition
Any long axon
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