Abstract
To quantify the amount of solid, liquid or gas that can be adsorbed on to a surface, the surface area must be known. Equations were developed to calculate the macroscopic surface area of the adult human stomach in vivo, at any given meal volume. For a meal volume of V≈0-2000 cm3, the surface area SA≈113-1030 cm2 and by using a cylinder-shaped stomach model, the diameter D≈2.4-10.3 cm, length L≈27-32 cm and width W≈ 7.5-32 cm. The cylinder model found for a given volume, the standard deviation in average surface area values may result from fluctuations in both length, diameter and width, indicating the stomach, by changing shape, changes surface area.
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