NERVES REFLEX BEHAVIOR

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NERVESREFLEX BEHAVIOR

• CROSS EXTENSOR
• WITHDRAWAL REFLEX
• KNEE-JERK REFLEX

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CROSSED EXTENSOR

• When a muscle flexes, and the extensors are
  inhibited

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WITHDRAWAL REFLEX

• When someone unexpectedly touches something hot

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KNEE-JERK REFLEX

• Simple reflex with one sensory neuron
  communicating directly with a motor neuron

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NERVE PATHWAYS

• REFLEX ARCS

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• The nerve impulse travels through the nervous
  system on nerve pathways
• It begins with a receptor at the end of the
  sensory nerve fiber
• The fiber leads to several interneurons within
  the central nervous system which leads to a
  processing center called the reflex center.

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• They then connect with various other interneurons
  in other parts of the nervous system which
  communicate with motor neurons whose fibers pass
  outward from the central nervous system to
  effectors ( muscle or glands that responds to
  stimulation)