. Directions for laboratory work in physiology for the use of medical students. Physiology. ELECTRICAL EXCITATION OF HUMAX MLTSCLrE-. 85 EXPERIMENT XVII. Response of Human Muscle to Separate Induction Shocks and to a Tetanizing Current. Wet the left arm over the motor point for the flexor longus pollicis, bind on a wet pad, and then arrange the ap- paratus. See that the hands are dry in handling the appar- atus. Apparatus.—I'his consists of an arm rest and recording instruments, and the stimulating outfit used in Experiment XVI. The arm rest is to be placed on the table before which the subjec
. Directions for laboratory work in physiology for the use of medical students. Physiology. ELECTRICAL EXCITATION OF HUMAX MLTSCLrE-. 85 EXPERIMENT XVII. Response of Human Muscle to Separate Induction Shocks and to a Tetanizing Current. Wet the left arm over the motor point for the flexor longus pollicis, bind on a wet pad, and then arrange the ap- paratus. See that the hands are dry in handling the appar- atus. Apparatus.—I'his consists of an arm rest and recording instruments, and the stimulating outfit used in Experiment XVI. The arm rest is to be placed on the table before which the subject is to stand, wath the recording apparatus to the left, and the stimulating outfit to the right, with key and coil within easy reach of his hand. The arm is to. Fig. 18. Arm rest for support of hand and electrodes. A, arm rest; B, hori- zontal rod fixing hand; C, vertical rod on arm rest; D, copper plate, the indif- ferent pole, on which is a gauze pad; E, exciting electrode; F, vertical rod, clamped to horizontal rod on the arm rest. lie in supination on the arm rest, and the hand is to be fixed by a horizontal rod (B) which presses lightly on the palm, and is clamped to the vertical rod (C) on the arm rest. The movement of the thumb is to be transmitted by a thread, which is fastened by a loop to the thumb and passes round a pulley (see Fig. 19) to a muscle lever, which is con- nected by another thread to a rubber band supported on an L rod. clamped to the same stand as the lever and above it. The thread from the thumb is fastened to the second, and that. 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 Lombard, Warren P. (Warren Plimpton), 1855-1939. Ann Arbor, G. Wahr
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