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J Appl Physiol 49: 536-537, 1980;
8750-7587/80 $5.00
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Journal of Applied Physiology, Vol 49, Issue 3 536-537, Copyright © 1980 by American Physiological Society

ARTICLES

Shrinkage of dog lobes during air-drying fixation

B. G. Murphy and L. A. Engel

Air-drying of canine lung lobes, distended at a constant pressure corresponding to 50% of lobar total lung capacity, resulted in a volume shrinkage of 35.8%. To examine associated changes in shape of the lobes, the shrinkage of three orthogonal directions (x, y, and z) was quantitated by measuring the change in length per unit length (strain; epsilon) of straight lines between pleural markers. Epsilon x = 0.14, epsilon y = 0.22, and epsilon z = 0.12. This inequality of strains indicated that moderate shape changes occurred. The direction of the largest strain component (epsilon y) corresponded to a direction normal to the largest projected surface area of the lobe.


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X. Yan, J. J. Polo Carbayo, E. R. Weibel, and C. C. W. Hsia
Variation of lung volume after fixation when measured by immersion or Cavalieri method
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[Abstract] [Full Text] [PDF]


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