L2.9: Nervous Tissue

• Nervous tissue

  • Neurons
  • Neuroglia (glial cells)
• • To receive stimuli and relay impulses.
  • Brain is the control center of the body.
  • Protects neurons (neurons does not divide)
  • Receive and conduct electrochemical impulses to and from body parts
  • Irritability
  • Conductivity


  nervous tissue
• • Its two major functions are irritability and conductivity.
  • Its cytoplasm is drawn out into long processes (extensions up to 3ft.) This allows a neuron to conduct an impulse to distant body locations.


  neurons
• • Special group of supporting cells that look like dots.
  • Its functions are to insulate, support, and protect the delicate neurons in the structures of the nervous system—the brain, spinal cord, and nerves.


  neuroglia (glia)