VOCABULARY These are important words for you to know and may be terms you wish to include on the extended response portion of your test later this week. Define each in your own words. Insert a picture to help you remember the meaning, if necessary. Central Nervous System Peripheral nervous system Autonomic nervous system Reflex action Learned response Neuron Dendrite Axon Axon Terminal Soma Myelin sheath Sensory neuron Motor neuron Synapse Impulse Stimulus Response