. Elements of human physiology. Physiology. THE CONTKACTILE TISSUES 121 surface.' Fig. 52 shows the direction of the current in a muscle with two cut ends. When the whole muscle is quite dead, this current of rest, or 'demarcation current' (Hermann), disappears. The current is due to the electrical differences at the junction of living and dying (not dead) tissue. If the sartorius of the frog be cut out and immersed for twenty-four hours in 0'6 per L'lu. Current of rest. cent. NaCl solution made with tap water { containing lime), all the injured fibres die, and the uninjured fibres ar
. Elements of human physiology. Physiology. THE CONTKACTILE TISSUES 121 surface.' Fig. 52 shows the direction of the current in a muscle with two cut ends. When the whole muscle is quite dead, this current of rest, or 'demarcation current' (Hermann), disappears. The current is due to the electrical differences at the junction of living and dying (not dead) tissue. If the sartorius of the frog be cut out and immersed for twenty-four hours in 0'6 per L'lu. Current of rest. cent. NaCl solution made with tap water { containing lime), all the injured fibres die, and the uninjured fibres are then found to be iso-electric and therefore currentless. The existence of this current may be demonstrated with- out using a galvanometer. If the nerve of a sensitive muscle-nerve preparation (a. Fig. 53) be allowed to fall on an excised muscle (b), so that two points of the nerve are in Fig. 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 Starling, Ernest Henry, 1866-1927. Chicago : W. T. Keener
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