noun, Physiology.
the nerve pathways followed by an impulse during a reflex.
(physiol) the neural pathway over which impulses travel to produce a reflex action, consisting of at least one afferent (receptor) and one efferent (effector) neuron

reflex arc n.
The route followed by nerve impulses to produce a reflex act, from the periphery through the afferent nerve to the nervous system, and thence through the efferent nerve to the effector organ.


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