arc, reflex

arc, reflex,

n a system of nerves used in a reflex or involuntary act, consisting primarily of an afferent nerve with sensory receptor, a nerve center, and an efferent nerve that stimulates the effector muscle or gland.
References in classic literature ?
You may remember that this trousseau was kept in the old armoire, on the right hand side of the little door of my dressing-room--"
Madame la Vicomtesse will have the goodness to pardon me--it was on the LEFT hand side of the room--Monsieur's medals were kept in the opposite armoire.
The corridor terminated in a hall, large, lofty, and square; a glass door on one side showed within a long narrow refectory, with tables, an armoire, and two lamps; it was empty; large glass doors, in front, opened on the playground and garden; a broad staircase ascended spirally on the opposite side; the remaining wall showed a pair of great folding-doors, now closed, and admitting: doubtless, to the classes.