. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. -I I i_ Fig. 81. Effect oH pH on O2 tension for half saturation of blood. • Loligo, Q Homarus, A Limulus. Redfield and Ingalls.'"'" for oxygen is in the alkaline range, whereas in Loligo, Homarus, Maja, and Cancer the minimum Oo affinity is on the acid side, as it is for hemoglobin (Fig. 81).!-^ In the snail Helix the affinity for oxygen is minimum at pH , and the oxygen dissociation curve moves to the left on both the acid and alkaline side of this pH.^- It has been suggested^^' that the increased
. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. -I I i_ Fig. 81. Effect oH pH on O2 tension for half saturation of blood. • Loligo, Q Homarus, A Limulus. Redfield and Ingalls.'"'" for oxygen is in the alkaline range, whereas in Loligo, Homarus, Maja, and Cancer the minimum Oo affinity is on the acid side, as it is for hemoglobin (Fig. 81).!-^ In the snail Helix the affinity for oxygen is minimum at pH , and the oxygen dissociation curve moves to the left on both the acid and alkaline side of this pH.^- It has been suggested^^' that the increased O2 affini- ty with added COo permits the hemocyanin to load with oxygen when animals like Busycon and Linndus enter stagnant high-CO^ water. Certainly the blood would load at a lower O^ tension in the presence of CO2 than in its. 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 Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders
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