Dynamics Of The Human Stomach
Author(s)
R. Miftahof & N. Akhmadeev
Abstract
A mathematical model of the stomach as a soft electromyogenic biological shell
is developed, which is based on detailed biological data of the structure and
function of the organ. The dynamics of the spread of the wave of depolarization
and concomitant stress-strain changes in the smooth muscle syncytia of the
stomach were analyzed. Numerical results revealed that the fundus, the body and
the antrum of the organ always experience biaxial stress-strain states, while the
cardia and the pylorus undergo uniaxial stretching with crease development. The
circular smooth muscle layer generated greater total forces throughout the
dynamic process in comparison to the longitudinal layer. The body of the organ
along the lesser curvature and the cardia-fundal area was constantly overstressed.
Although the theoretical results qualitatively resemble patterns of electrical and
mechanical activity observed in vivo and in vitro, there is currently no
affirmative experimental evidence to conduct a detailed quantitative evaluation
of the results.
Keywords: human stomach, soft thin shell, biomechanics.
Keywords
human stomach, soft thin shell, biomechanics.
Related Book
Other papers in this volume
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