components of the neurone
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8 Terms
axon
extension of the cytoplasm that transmit impulses away from the cell body to the axon endings
dendrites
many thin extensions of the cytoplasm that receive impulses from other nerve cells and transmit impulses towards the cell body
cell body
contains the nucleus and groups of ribosomes in the cytoplasm that synthesise neurotransmitters
synaptic end bulb
swelling at the end of the axon in which neurotransmitter is stored
axon ending
secretes neurotransmitters by exocytosis into synaptic cleft
schwann cells
surround peripheral neurones in vertebrates and grow around the axon to form a multi layered myelin sheath
myelin sheath
formed as schwann cells grow around the axon in peripheral neurones, provide electrical insulation to speed up nerve impulse transmission
nodes of ranvier
intervals in the myelin sheath between adjacent schwann cells
Note 
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