How does the digestion process happen when laying horizontal? I guess this question is more for liquids, I’m pretty sure that the intestines do something like a sequence of squeezing that pushes poo down (please correct me) but how do liquids go through the process without the aid of gravity?
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The digestive tract has a series a sphincters which open and close involuntarily for normal one-way operation. The anal sphincter is the last of them. Also liquids get sucked up into the intestine wall in the uppermost parts of the intestine, so down from there there’s no free liquid. If there is, you get diarrhea.
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