02. Neurons

• Neuron

  • Cells for Nervous System (Nerve Cells)
  • Has a distinct shape
  • Performed its function in a most useful way
• Dendrites

  • Thin branches that receive stimulation from the environment.
• Cell Body

  • Star-shaped body branching out in all directions.
• Nucleus

  • Holds the chromosomes needed to produce proteins.
• Myelin Sheath

  • Covering the material of an axon.
• Axon

  • Thin fiber that extends the nerve cell body.
• Node of Ranvier 

  • Gap that facilitates rapid conduction of nerve impulses.
• Synapse

  • Small gap at the end of the neuron that passes impulse to another dendrites of another neuron.
• Axon Terminals

  • The endpoint of the axon that serves as the tail for neurons.
• Types of Neurons

  • Sensory Neurons
  • Motor Neurons
  • Inter Neurons
• Sensory Neurons

  • Sends information that was received by your senses from the environment to the spinal cord and brain.
• Motor Neurons

  • Sends information from your brain and spinal cord to the tissues and organs of the body.
• Inter Neurons

  • Acts like a bridge that holds the sensory and motor neurons together.