| A | B |
| Regulation | Is the control and coordination of all life activities |
| Receptors | Are specialized structures that are sentitive to changes in the external and internal environment |
| Neurons | Nerve cells, is the basic unit of structure and function in nervous system |
| Effectors | Are muscles or glands in which neurons are attached to |
| Impulse | Electrochemical message |
| Stimulus | Is a change in the external or internal environment which initiates an impulse |
| Nerve Control | Neurons are used for transmission of impulses from one part of the body another |
| Dendrites | Fibers that detect stimuli and generate an impulse toward toward the cyton |
| Cyton | Known as the cell body, contains the nucleus of the neuron |
| Axon | A fiber that transmits the impulse away from the cyton and towards the terminal branches |
| Terminal Branches | The ends of axons that secrete neurotransmitters |
| Synapse | The gap between the terminal branches of 1 neuron and the dendrites of another neuron |
| Neurotransmitters | Chemicals secreted by the terminal branches that aid in the transmission of an impulse across the synapse |