| A | B |
|---|
| Regulation | The control and coordination of all eight life functions. |
| Receptors | specialized structures that are sensitive to changes in the internal and external enviroment. |
| Impulses | electrochemical messages |
| Effector | muscles or glands in which neurons are attached to. |
| Stimulus | ia a change in the external or internal enviroment, which initiates an impulse. |
| Nueron | the basic unit of structue and function in the nervous system. |
| Cell Body | contins the nucleus of the neuron |
| Dendrites | fibers that detect stimuli and generate impulse toward the cyton. |
| Axon | a fiber that transmits the the impulse away from the cyton and toward the terminal branches. |
| Synapse | the gap between the terminal branches of one nerve and the dendrites of another neuron. |
| Sensory Neuron | carry the impule from the receptor toward the spinal chord and brain |
| Motor Neuron | Carry impulses from the brain and spinal chord toward the effectors. |
| interneurons | relay imulses from one neuron towar d another. Found in the spinal chord. |
| nerves | a bundle of axons that are bound together by connective tissue |
| sensory nerve | composed only of dendrites of sensory neurons, that carry impulses from receptors toward the spinal chord and brain |
| motor nerve | contain only the axons of motor nuerons. Conduct impulses from the brain toward the effectors. |
| neurotransmitter | Chemical secreted by the terminalbranches that aid in the transmission of an impulse across the synapse |
