neuron

cell body (soma)

dendrites

axon

terminal branches (buttons)

myelin sheath

nodes of Ranvier

glial cell (neuroglia)

oligodendroglia

Schwann cells

astrocytes

action potential

resting membrane potential

sodium-potassium pump

selective permeability

all-or-none response

depolarization

threshold

repolarization

hyperpolarization

refractory period

synapse

synaptic gap (cleft)

synaptic vesicles

reuptake

excitation

inhibition

neurotransmitters

acetylcholine (ACh)

dopamine

serotonin

endorphins

Substance P

agonist

antagonist

reuptake inhibitor