|
|
|
|
|
|
|
||
ARTICLE |
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.
Submitted on April 14, 1960
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
This article has been cited by other articles:
|
|
 |
|
  C. M. Ripplinger, V. I. Krinsky, V. P. Nikolski, and I. R. Efimov Mechanisms of unpinning and termination of ventricular tachycardia Am J Physiol Heart Circ Physiol, July 1, 2006; 291(1): H184 - H192. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. W. Holmes, M. Hunlich, and G. Hasenfuss Energetics of the Frank-Starling effect in rabbit myocardium: economy and efficiency depend on muscle length Am J Physiol Heart Circ Physiol, July 1, 2002; 283(1): H324 - H330. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W. J. Whalen and J. Fangman Respiration of Heart Muscle as Affected by Oxygen Tension Science, July 19, 1963; 141(3577): 274 - 275. [Abstract] [PDF]
|
|
|
|
