Neurons 1.2

Neuron

nerve cell that conductus electrical impulses and relay info throughout the body

3 parts of Neuron

Dendrites, Cell Body, Axon

Dendrites

Receiving end, Receives info from other neurons, conducts impulses to the cell body

Cell Body

Synthesizes all nerve cell products (main function to manufacture neurotransmitters)

Receives info from dendrites

Sends info towards axons

Axon

Conducts nerves impulses away from cell body

terminates in axon terminals

Vary in length

Does not contain rough endoplasmic reticulum

Axon terminals

store neurotransmitter/ carry nerve impulse to the next neuron

Neurotransmitter

chemical messengers to communicate between neurons across a synapse

Synapse

space between 2 neurons

Presynaptic Neuron

neuron found before the synapse

Postsynaptic

neuron found after the synapse

Multipolar

3 or more extensions from cell body

one axon

many dendrites

motor neurons

Bipolar

two extensions

central cell body

special receptor cells

Unipolar

one extension from cell body

Interneurons

Found only in CNS

Typically multipolar neurons