| A | B |
|---|
| regulation | is the control and coordination of all the life activities |
| receptors | specialized structures that are sensitive to changes in the external and internal environment |
| impulses | elecrochemical message |
| effector | muscles or glands in which neurons are attached to |
| stimulus | change in the external or internal environment that initiates an impulse |
| neuron | nerve cell |
| cyton | cell body that contains the nucleus and controls the cells activities |
| dendrites | fibers that detect stimuli and generate an impulse toward the cyton |
| axon | a fiber that transmits the impulse away from the cyton and towards the terminal branches |
| synapse | the gap between the terminal branches of one neuron and the dendrites of the next |
| sensory neurons | carry impulse from receptors toward the brain or spinal cord |
| motor neurons | carry impulse from spinal cord to the effectors |
| interneurons | relay impulse from one neuron to the next |
| nerves | carries the impulse |
| neurotransmitters | chemical secreted by the terminal branches that aid in the transmission of the impulse across the synapse |
