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nervous system
| Term | Definition |
|---|---|
| Cerebrum | controls thinking, memory, reasoning, imagination |
| cerebellum | controls voluntary movements, balance and coordination |
| Medulla | Controls involuntary activities |
| neuron | nerve cell, send and receive chemical and electrical messages |
| impulses | electrical messages |
| dendrites | receive impulse |
| axon | carries impulse from cyton |
| cyton | cell body- contains nucleus |
| terminal branches | end point of a neuron that sends messages to dendrites of next neuron |
| synapse | gap between two neurons |
| neurotransmitters | chemicals secreted into synapse |
| stimulant | increase message transmission |
| depressant | decrease message transmission |
| reflex | response to a stimulus |
| effector | muscle or gland that produces a specific response |
| spinal cord | a cable of nerves/neurons, enclosed in and protected by vertebral column and carries impulses between the brain and the body, controls reflexes |
| central nervous system | spinal cord and brain |
| brain | mass of (mostly interneurons), protected cranium, site of consciousness and intellectual function, |
Created by:
gkourie