nervous sys.

Histology:2nd stage
2015-2016 Dr. Raja Ali
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Nerve Tissue & the Nervous system:

Chapter Outline:
Neurons (Cell Body (Perikaryon) , Dendrites , Axons ) .
Synaptic Communication.
Glial cells & Neural Activity :( Oligodendrocytes , Astrocytes , Ependymal cells ,Microglia ,Schwann cells(Neurolemmocytes), Satellite cells of Ganglia).
Myelin.
Central Nervous System (Brain &Spinal Cord , Meninges ).
Periperal NervousSystem : ( Nerves , Ganglia ) .
Neural Plasticity& Regeneration.

Learning Objective:

? Name and describe the divisions of nervous system.
? State the function of nerve cells.
? Name , locate &describe the structures of synapses.
? State the function of glial cells.
? Name , locate &describe the structures of the brain and spinal cord.
? Describe the peripheral nervous system.

Terminology:
• Input: sensory = sensory input.
– Receptors monitor changes.
– Changes called “stimuli” (sing., stimulus)
– Information sent by “afferent” nerves.
• Integration:
– Info processed.
– Decision made about what should be done.
• Output: motor = motor output.