Neuralgia

• Neuron classification based on branches from the axon and cell body includes:

  • Bipolar
  • Pseudounipolar
  • Multipolar
  • Unipolar (only one branch)
  • Motor function
  • Sensory function
  • Interneuron (association)
• Neurons are mostly association neurons, motor neurons, and are only in the CNS for integration
• Neuroglia:

  • 2 types in PNS and 4 types in CNS (Helper cells)
  • Neurolemmocytes (Schwann cells) produce the myelin sheath in the PNS and create nodes of Ranvier
  • Astrocytes are the most abundant glia, allowing saltatory conduction
  • Ganglionic gliocytes (satellite cells) bind and support cell bodies within a ganglia in the PNS, preventing cell bodies from bumping into each other
• Astrocytes in the CNS:

  • Form the blood-brain barrier
  • Function in synapse formation
  • Reuptake of glutamate
  • Have metabolic functions