| A | B |
|---|
| Regulation | the control and coordination of all life activities. |
| Receptors | receives the stimulus and initiates an impuse. |
| Impulses | an electrochemical message. |
| Effector | muscles or glands in which neurons are attached too. |
| Stimulus | a change in the external or internal environment, which initiates an impulse. |
| Neuron | the basic unit of structure and function in the nervous system. |
| Cyton | cell body which contains the nucleus of the neuron. |
| Dentrites | fibers that detect stimuli and generate an impulse toward the cyton. |
| Axon | a fiber tht transmitts the impulse away from the cyton and towards the terminal branches. |
| Synapse | the gap between the terminal branches of 1 neuron and the dendrites of another neuron. |
| Sensory neuron | carry impulses from the receptors toward the spinal cord and brain. |
| Motor neurons | carry impulses from brain and spinal cord toward the effectors. |
| Interneurons | relay impulses from one neuron to another. |
| Nerves | a bundle of axons that are bounded together by connective issue. |
| Sensory nerve | a nerve containing the axons of sensory neurons only |
| Motor nerve | a nerve containing the axons of motor neurons only. |
| Neurotransmitter | chemicals secreted by the terminal branches that aid in the transmission of an immpulse cross the synapse. |
| Acetylcholine | a type of neurotransmitter. |
