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Nervous System (8.1 (General Functions of Nervous System (Motor Function,…

- - - - Contains: Brain and spinal cord
    - - Contains: Nerves that extend from the brain and spinal cord
  - - - PNS: Sensory receptors- detect changes in their surroundings. Once stimulated, sensory receptors transmit a sensory impulse to the CNS. A sensory impulse is carried on a sensory neuron
    - - CNS: involves interpretation of an incoming sensory impulse.integration occurs in inter neurons. A motor impulse begins
    - - PNS: Involves the response of a body part. Motor impulses are carried from CNS to responsive body parts called effectors; a motor impulse is carried on an motor neurons
      - Effectors
        
        muscle
        
        glands
- - - - Dendrites : many per neuron, short and branched, receptive portion of a neuron, carry impulses toward cell body.
      - Axons : one per neuron, long thin process, carry impulses away from cell body, note terminations of axon branch = axonal terminals synaptic knobs