| A | B |
| neurons | receive, integrate and transmit information |
| interneuron | neurons that communicate only with other neurons |
| sensory neurons | receive signals from outside the nervous system |
| motor neurons | carry messages from the nervous system to the muscles |
| dendrites | parts of a neuron specialized to receive information |
| synaptic cleft | gap between the terminal button of one neuron and the cell membrane of another neuron |
| neurotransmitters | chemicals that transmit information from one neuron to another |
| axon | transmits signals away from the soma to other neurons |
| myelin sheath | insulating material, that encases some axons |
| action potential | a very brief shift in a neuron's electrical charge that travels along an axon |