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Nervous System
| Term | Definition |
|---|---|
| neuron | nerve cell made up of dendrites, cell body, and axon |
| nerve impulse | message that a neuron carries; either chemical or electrical signals |
| nerve | a bundle of nerve fibers |
| synapse | place where a neuron transfers an impulse between the axon of one neuron and the dendrites of another or other body structure |
| central nervous system (CNS) | includes the brain and spinal cord and acts like a traffic cop that directs where impulses go |
| peripheral nervous system (PNS) | network of nerves that branches out from the central nervous system and connects it to the rest of the body |
| reflex | automatic response that occurs rapidly without conscious control |
| brain | control center of the CNS; broken down into three main sections |
| brain stem | controls body's involuntary actions like breathing and heartbeat |
| cerebellum | coordinates muscle actions and helps with maintaining balance |
| cerebrum | interprets input from the five senses, controls movement, and carries out complex mental processes like learning and remembering |
| spinal cord | thick column of nervous tissue that links the brain to the PNS |
Created by:
muellershauna
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