The nervous system

In this topic

• The neuron — the cell of the nervous system
• Nervous systems get more complex across the animal kingdom
• In vertebrates: a central and a peripheral part
• Reflex and reflex arc

Key terms

• Neuron
• Dendrite
• Axon
• Synapse
• Nerve net
• Ventral nerve cord
• Tubular nervous system
• Central nervous system
• Peripheral nervous system
• Reflex
• Reflex arc
• Receptor

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