Nodes of Ranvier - Gaps between schwann cells, Sensory neurone - Takes impulse from receptors to CNS, Schwann cell - Wrap around axon to insulate the impulse, Cell body - Contains mitochondria to provide ATP needed in transmission of impulse, Dendron - Transmits impulse towards the cell body, Myelin - A lipid that helps insulate the axon, Synapse - A gap between 2 neurones, Neurotransmitter - A chemical that allows the impulse to cross a synapse, Motor neurone - Transmits the impulse to an effector, Axon - Transmits the impulse away from the cell body, Brain and spinal cord - Parts that make up the CNS, Reflex - Fast and automatic response to protect the body,

A2 structure of nerves

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