Capillarity and diffusion distances in skeletal muscles in birds

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
G K Snyder

Abstract

Tissue capillarity and diffusion distances were determined for red and white skeletal muscles of adult birds ranging in mass from 10.8 to 6200 g. In addition, literature values for capillarity and diffusion distances in skeletal muscles of mammals were incorporated into the data set. Muscle mass was closely coupled to body mass. However, no significant allometric relations were found for any of the other variables measured. Number of capillaries per fiber was not correlated with cross sectional area of individual muscle fibers. Thus, capillary density decreased in a hyperbolic manner against fiber area and diffusion distance decreased in a hyperbolic manner against the number of capillaries per muscle fiber. Red muscles had significantly higher numbers of capillaries per fiber and significantly shorter diffusion distances than did white muscles. The patterns for tissue capillarity and diffusion distances in avian muscle reported here are similar to values reported previously for mammalian muscles. In both taxonomic groups capillarity and diffusion distances are independent of body mass. In addition, diffusion distances are characteristic of capillaries distributed in random arrays through the muscle cross section.

Citations

Sep 1, 1992·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·C A Farrelly, G K Snyder
Jan 1, 1992·European Journal of Applied Physiology and Occupational Physiology·G K SnyderJ R Coelho
Jun 1, 1995·Anatomia, histologia, embryologia·E LuqueR Vaamonde
Jan 1, 1997·Journal of Applied Physiology·P D ChilibeckE G Noble
Mar 1, 1993·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·C A Farrelly, G K Snyder
Apr 16, 1998·Journal of Applied Physiology·M J PlyleyE G Noble
Aug 1, 1998·Journal of Morphology·J R TorrellaG Viscor
Apr 1, 1992·Comparative Biochemistry and Physiology. Comparative Physiology·G ViscorJ Palomeque
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Kristin K StoverThomas J Roberts

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