Review
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Oct 21, 2014; 20(39): 14407-14419
Published online Oct 21, 2014. doi: 10.3748/wjg.v20.i39.14407
Figure 2
Figure 2 Gas physiology in the gastrointestinal tract. Gas input is determined by swallowing, chemical reactions (bacterial fermentation, food digestion) and diffusion from blood stream. Output is achieved by belching, absorption into the blood, bacterial consumption and anal evacuation. Adapted from[31].