Match the following anatomical terms (column B) with the appropriate description or function (column A). Column A 1. region of the cell body from which the axon originates 2. secretes neurotransmitters 3. receptive regions of a neuron (2 terms) 4. insulates the nerve fibers 5. site of the nucleus and most important metabolic area 6. involved in the transport of substances within the neuron 7. essentially rough endoplasmic reticulum, important metabolically 8. impulse generator and transmitter Column B a axon b. axon terminal c. axon hillock d. cell body f. chromatophilic substance g. dendrite h. myelin sheath i. neurofibril