Structure of neurons

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Kat J

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Where/what - neurons
The CNS contains all the neurons in the body.
A neuron is a nerve cell.
Neurons carry 'messages' electrically and chemically.
Dendrites
Branch like structures that carry impulses from neighbouring neurons towards the cell body.
Cell nucleus 
Contains DNA/genetic info of cell.
Cell body
Includes a nucleus.
Axon
Tube like structure that carries impulses away from the cell body, down the length of the neuron.
Myelin sheath
Prevents signal from degrading.
A fatty layer that covers the axon.
Node of ranvier
Gaps in the myelin sheath that allows the impulse to increase in speed by forcing it to jump accross gaps.
Terminal buttons
At the end of the axon, communicates across the synapse.
Vesicles 
Tiny sacs that hold neurotransmitters.

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Structure of neurons

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4.2 Neurons and Synapses

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Edexcel GCSE Psychology

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