The Autonomic Nervous System                 Chapter 15

   I. Background
      A. ANS
      B. Comparison - somatic vs autonomic
         1. effector organs
         2. structure
            a. SNS
            b. ANS
               1) preganglionic neuron
               2) postganglionic neuron

  II. Subdivisions of ANS
      A. Sympathetic
         1. Overview
            a. flight-or-fight
         2. Anatomy
            a. site of origin - thoracolumbar division
            b. fibers
               1) preganglionic neurons
                  a) white ramus
                  b) sympathetic trunk
               2) synapse
               3) postganglionic neurons
                  a) gray ramus
      B. Parasympathetic
         1. Overview
            a. resting & digesting
         2. Anatomy
            a. site of origin - craniaosacral division
               1) cranial nerves
               2) vagus nerve
               3) sacral nerves
            b. fibers
               1) terminal ganglia

 III. Neurotransmitters
      A. Acetylcholine (ACh) 
         1. cholinergic fibers
         2. release
         3. receptors
            a. nicotinic
            b. muscarinic
      B. Norepinephrine (NE)
         1. adrenergic fibers
         2. release
         3. receptors
            a. beta blockers
            b. phenylephrine

  IV. Communication

   V. Control
      A. Brain stem & spinal cord controls
      B. Hypothalamic control
      C. Cortical control