Nerve-fibers

treated with silver nitrate and showing Frohmann's lines. Medullated fiber, with Schwann's sheath, c. Neurilemma, t,t. Ranvier's nodes, b. White substance of Schwann, d. Cells of the endoneurium. a. Axis cylinder. Transverse Section of a Nerve-fiber. Primitive Fibrilla and Axis-cylinder. Medullated Varicose Fiber. Peripheral Ganglionic Cell, with tive-ti ue a Ganglionic Cki l, showing Spiral and a Straight id of the triceps. N.-le , without a nerve. N.Ice, resembling a nerve. N.-loop, an arched conection between two or more nerves. N. -medulla, axis-cylinder of a nerve. N., Medullated. See '.-fiber. N. -mimicry. Same as Neuromimesis. N., lixed, one made up of both afferent and efferent ers. N. -motion, the condition of excitement of erves in the normal, intact body, due to physiologic normal stimulus; its nature is unknown. N., lot or, one containing only or chiefly motor fibers..-needle, in dentistry, an instrument used for broach out a pulp-cavity. N., Non-medullated. See '.fiber. N. -paste, a preparation for destroying the rves of teeth, for the composition of which difrent formulae are given. Some are composed of senious acid and creasote, others of arsenious acid, easote, and sulphate of morphin. N.-path, the iurse pursued by a nervous impulse. N. -plate, layer of nervous ti ue, which may develop into nerve-tube or nerve-cord. N. -plexus, a grouping ' nerves. N. -power, the nervous of the body. Pre or, an afferent nerve, energy irritation of which timulates the vaso-motor center. N.-ring, the ring nerve-fibers surrounding a hair-follicle below orifice of the sebaceous glands. N.-root: I. 2 root of a nerve; the nerve or one of its contituent parts, as it emerges from a central organ. 2. plant Cypripedium pitbescens. N. -rudiment, le rudiment of a nerve. N., Secretory, an efferent erve, stimulation of which causes increased activity ' the gland to which it is distributed. N. -section, division of a nerve for the relief of neuralgia, -shaken, having the nervous system shattered. N., sinal, one of those arising from the spinal cord and Nervi (ner'-vi). Plural of Nervus, a nerve.