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reflex arc
reflex arc A reflex arc is a feedback pathway in which stretch sensed by a muscle spindle is sent through a sensory neuron to spinal cord motor neurons, which then trigger the muscle to contract.
A reflex arc is a feedback pathway in which stretch sensed by a muscle spindle is sent through a sensory neuron to spinal cord motor neurons, which then trigger the muscle to contract. In this example, the response opposes further stretching and helps maintain normal muscle tone.