. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. IT- BULLETIN : Ml'SEl'M OF COMPARATIVE ZOOLOGY Vol. 124 The contractile responses of the diaphragms were measured isometrically, the muscles being- stimulated at rest length. The rales of tetanic contraction and relaxation were treated by plot- ting the reciprocal of the "half-time" for either process against the reciprocal of the absolute temperature (Figs. 1, 2). H«* c o o o ^ c o I c o 0002 % 0001 h- 38 -r 32. • Rat + Normal hamster A Hibernating hamster T- 33 Fig. 1. Relationship betw
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. IT- BULLETIN : Ml'SEl'M OF COMPARATIVE ZOOLOGY Vol. 124 The contractile responses of the diaphragms were measured isometrically, the muscles being- stimulated at rest length. The rales of tetanic contraction and relaxation were treated by plot- ting the reciprocal of the "half-time" for either process against the reciprocal of the absolute temperature (Figs. 1, 2). H«* c o o o ^ c o I c o 0002 % 0001 h- 38 -r 32. • Rat + Normal hamster A Hibernating hamster T- 33 Fig. 1. Relationship between isometric contraction rate of diaphragm muscle, in vitro, and temperature. Semilogarithmie plot. Each point repre- sents an average value of 6 to 10 separate experiments. pH — The use of the half-time under these conditions is based on the treatment of Ramsey (1944), whose equation follows first-order kinetics and describes the rate of tension production from rest length with fair precision. Therefore the reciprocal of the con- tract ion half-time would be proportional to the specific first-order rate constant. Such a treatment is sufficient for our 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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