| A | B |
|---|
| regulation | the control and coordination of all life activities |
| receptors | specialized structures for recieving info |
| impulses | electrochemical messages |
| effector | muscles and glands |
| stimulus | a change in the enviroment which initiates impulse |
| neuron | a nerve cell |
| cyton | cell body |
| dendrites | the fibers that detect stimuli |
| axon | fiber that transmits impulse away from the cyton |
| synapse | the gap between terminal branches and dendrites of two cells |
| sensory neurons | carry impulses from receptors to the spinal cord and brain |
| motor neurons | carries impulse from brain and spinal cord |
| interneurons | relays impulses from one neuron to another |
| nerves | a bundle of axons that are bound together by connective tissue |
| sensory nerve | a nerve containing the axons of sensory neurons only |
| motor nerve | a motor neuron |
| neurotransmitters | chemicals secreted by the terminal branches |
