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Dendrites

branched, thick extensions, coming directly off of the cell body

functions of Dendrites

to receive a nerve impulse and carry nerve impulses toward the cell body

Axon

a thin long process, ranges in length from lml to lm depending on location

function of Axon

carries nerve impulses away from the cell body towards other neurons, muscle and glands

axon hillock

where axon joins the cell body (meeting place)

trigger zone

where a nerve impulse is started

myelin

white phospholipid covering an axon found only on some neurons

axon terminals

branches that the axon divides into

synaptic end bulbs

enlarged region at the end of each terminal

synaptic vesicles

membrane enclosed sacs located with in the synaptic end bulbs

neurotransmitter

chemical that is stored in the synaptic vesticles

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