Roughly speaking, in striated muscle tissue (such as in the deltoid or other common sites for intramuscular injection), does the diffusion of a fluid have the same diffusion constant irrespective of the direction it travels, or is it anisotropic, in the sense of requiring multiple diffusion constants to be specified for the process?

More specifically, say we had fluid diffusing in one direction and another perpendicular to it; would the diffusion constants differ non-negligibly?

  • $\begingroup$ @BryanKrause So you'd expect in say one direction and another perpendicular to it, for the diffusion constant to differ non-negligibly? $\endgroup$ – user1997744 Jun 27 '17 at 19:40
  • $\begingroup$ Can you, maybe specify some more details as to in what context? It seems that this question is a bit broad. And wouldn't some amount of anisotropy (not differing diffusion constants, but anisotropy of the rates) be because of the muscle action and gravity? $\endgroup$ – Satwik Pasani Jul 5 '17 at 10:14

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