nerve cell types and myelin sheath

ache anatomical anatomy art axon biology bipolar body brain cell cells central clip close cns cord cytoplasm dendrites development diagram drawing graphic health human illustration impulse info isolated medical mesaxon multipolar myelin myelinated myelination nerve nervous neural neurilemma neuron organ organism pain peripheral physiology pns poster science scientific sensory sheath shwann signals spinal structure synapse synapses system tissue types unipolar vector