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- Paul F. Cranefield
- From the Department of Physiology, State University of New York Downstate Medical Center, Brooklyn, New York
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- Kalman Greenspan
- From the Department of Physiology, State University of New York Downstate Medical Center, Brooklyn, New York
抄録
<jats:p>The rate of oxygen uptake of quiescent papillary muscle of the cat heart has been determined in a flow respirometer with the use of the oxygen electrode. The apparent rate of oxygen uptake as a function of the diameter of the muscle was also determined. It was found that papillary muscles from cat hearts use oxygen at a rate of 2.84 (microliters/mg. wet weight)/hour at a temperature of 35°C. Such muscles can be adequately supplied by diffusion when their surface is uniformly exposed to an atmosphere containing 95 per cent oxygen only if their diameter is 0.64 mm. or less. Papillary muscles from kitten hearts use oxygen at a rate of 4.05 (microliters/mg. wet weight)/hour at a temperature of 35°C. Such muscles can be adequately supplied by diffusion when their surface is uniformly exposed to an atmosphere containing 95 per cent oxygen only if their diameter is 0.53 mm. or less. If the muscles are small enough to be adequately supplied with oxygen by diffusion, the rate of oxygen uptake does not increase when the muscle is stretched.</jats:p>
収録刊行物
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- The Journal of General Physiology
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The Journal of General Physiology 44 (2), 235-249, 1960-11-01
Rockefeller University Press
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キーワード
詳細情報 詳細情報について
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- CRID
- 1363107369474677248
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- NII論文ID
- 30017471403
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- ISSN
- 15407748
- 00221295
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- データソース種別
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