Stucture of the Nervous System

14 terms by heathbar 

Create a new folder

Advertisement Upgrade to remove ads

neuron

a cell that is specialized to conduct nerve impulses

dendrite

short fiber that conducts toward the cell body of the neuron

cell body

contains the nucleus and a variety of other cellular organelles.

axon

long fiber that carries impulses away from the cell body of a neuron

reflex arc

a nerve pathway that consists of a sensory neuron, an interneuron and a motor neuron

action potential

another name for a neural impulse

neural impulse

a brief electrical charge that travels down an axon.

threshold

the minimum level of stimulation required to trigger a neural impulse

node

a gap in the covering of the axon

synapse

a small gap between the axon of one neuron and the dendrite of another neuron

neurotransmitter

a chemical that is released by a neuron for the purpose of carrying information across the gaps (synapses) between neurons

sensory neuron

nerve cell that carries information from the environment to the central nervous system

interneuron

type of neuron that connects sensory and motor neurons

motor neuron

nerve cell that carries signals from the central nervous system to muscle or gland cells

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set