L1.1.3.2.5: Types Based on Structure

• TYPES BASED ON STRUCTURE ● Multipolar neurons

  ● Bipolar neuron

  ● Unipolar neuron
• TYPES BASED ON STRUCTURE

  ● Based on the number of processes extending from the cell body
• ● Multipolar neurons

  ○ Many extensions from the cell body

  ○ Most common type because all motor and interneurons are multipolar
• ● Bipolar neuron

  ○ One axon and one dendrite

  ○ Located in special sense organs like nose and eye

  ○ Rare in adults
• ● Unipolar neuron

  ○ Have a short single process leaving the cell body

  ○ Very short and divides almost immediately into proximal (central) and distal (peripheral) processes

  ○ Sensory neurons found in PNS ganglia

  ○ Conduct impulses both TOWARD and AWAY from the cell body