Axon - The long fibre that carries the electrical nerve impulses, Sensory nerve - Neurons throughout the body and brain which receive messages from the senses, Motor nerve - Neurons throughout the body which sends voluntary and involuntary muscle movement messages, Synapse - The gap between two neurons, Neurotransmitter - The chemical secreted into the gap between neurons at a synapse, Myelin sheath - The covering of fatty material that speeds up the passage of nerve impulses, Axon Terminal - The structure at the end of an axon that produces neurotransmitters, to transmit the nerve impulse across the synapse, Nerve impulse - The high speed signals that pass along the axons of nerve cells. , Dendrites - The branching filaments receive and conduct nerve impulses towards the next cell. , Sense receptor - The sense organ or cells that receive stimuli from within (eg.food bolus) and outside the body (heat from a candle). , Response - The reaction to a stimulus by a muscle or gland eg. A blink, Cell body - The part of the nerve cell containing the nucleus., Reflex - A rapid automatic response to a stimulus. eg. peristalsis, Muscle fibre - Receives ’instruction’ from the motor neurons to contract or relax,

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