reflex arc

• explain stage 1 of reflex arc

  sense organ is stimulated
• explain stage 2 of reflex arc

  impulse is carried along the sensory neurons
• explain stage 3 of reflex arc

  chemical diffuses across the synapse
• explain stage 4 of reflex arc

  impulse is carried along the inter neurons
• explain stage 5 of reflex arc

  chemical diffuses across the synapse
• explain stage 6 of reflex arc

  impulse is carried along the motor neurons
• explain stage 7 of reflex arc

  chemical is released
• explain stage 8 of reflex arc

  muscle contracts/relaxes
• sensory neurons sends what kind of impulse?

  electrical
• synapse sends what kind of impulse?


  chemical
• motor neutrons sends what kind of impulse?

  electrical