. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M NaCl « FIG. 4. The influence of the Na concentration upon the K effect. Abscissa: NaCl concentration. Ordinate: KC1 concentration. x = Rapid loss of irritability. • = Preservation of irritability. II. The Antagonism between K and Ca The solutions, the effects of which on irritability of the sartorius muscle were detailed in Part I, contained M X 10~4 CaCl2. Because it is known that Ca is the antagonist of K in muscle, the K effect in our experiments was balanced by NaCl + CaC!2
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M NaCl « FIG. 4. The influence of the Na concentration upon the K effect. Abscissa: NaCl concentration. Ordinate: KC1 concentration. x = Rapid loss of irritability. • = Preservation of irritability. II. The Antagonism between K and Ca The solutions, the effects of which on irritability of the sartorius muscle were detailed in Part I, contained M X 10~4 CaCl2. Because it is known that Ca is the antagonist of K in muscle, the K effect in our experiments was balanced by NaCl + CaC!2. In order to learn the quantitative relationship between K and Ca, the KC1 concentration was varied and that CaCl2 concentration which just sufficed to maintain the irritability above the 20 cm. threshold was determined. In these experiments the NaCl concentration was constant ( mol.). As shown in Fig. 4, M X 10~4 CaCU was able to equilibrate the effect of 50 M X lO^4 KC1, but at the same CaCl2 concentration 51 M X 10"4 KC1 led to a rapid decrease in irritability. In a series of experiments the corresponding CaClo. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
