. A class book of (elementary) practical physiology : including histology, chemical and experimental physiology. Physiology. 15 CHAPTER XXXII. EXPERIMENTS ON NERVES. Rate of nerve conduction, , the velocity with which a nervous impulse travels along a nerve. Required:—Inductormm, 2 keys, 2 Leclanche cells, commutator less •cross wires, double electrodes, electric style, and 12 wires. Muscle chamber, with fine writing point. Nerve muscle preparation, with nerve most carefully dissected and with piece of spinal column attached. Drum at very fast speed. Set up the P circuit with 2 cells and i
. A class book of (elementary) practical physiology : including histology, chemical and experimental physiology. Physiology. 15 CHAPTER XXXII. EXPERIMENTS ON NERVES. Rate of nerve conduction, , the velocity with which a nervous impulse travels along a nerve. Required:—Inductormm, 2 keys, 2 Leclanche cells, commutator less •cross wires, double electrodes, electric style, and 12 wires. Muscle chamber, with fine writing point. Nerve muscle preparation, with nerve most carefully dissected and with piece of spinal column attached. Drum at very fast speed. Set up the P circuit with 2 cells and in drum contact. Wire the S circuit from S key to the inleading binding screws of a Pohl's commutator, less cross wires. The two sets of outleading terminals of the Pohl are wired to the two sets of external terminals of the muscle-chamber. From the latter remove the platinum and non- polarisable electrodes and in their stead attach the double electrodes Fig. 43, so that the two sets of wires shall be connected respectively with opposite sides of the commutator. When the rocker lies one way it will lead the stimu- lating current into wires at a near the muscle, and when turned over it will establish connection with b farthest from the muscle. Set up the style to write 9Gth seconds under the muscle FIG. 43. M Muscle. N Nerve on G, glass- plate across this, a and b, pairs of wires at 2-5 cm interval ending in A, B, for attachment to binding screws of muscle chamber. L Lead Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Birch, De Burgh. Philadelphia : P. Blakiston's Son
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysiology, bookyear1
