stimulus - the thing which starts the reflex arc. eg. a hot object, receptor - the sensor on your skin which detects the stimulus, sensory neurone - the neurone which carries the impulse to your spinal cord, relay neurone - the neurone which carries the impulse from the sensory neurone to the motor neurone, motor neurone - the neurone which carries the impulse from the relay neurone to the effector, effector - the part of the body which receives the nerve impulse (eg. a muscle), response - what happens as a result of the reflex, synapse - the part between neurones which allows the impulse to pass from one neurone to another,

Parts of a Reflex Arc

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