The more colon that is removed during a colostomy procedure, the more the stool will be:

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During a colostomy procedure, the section of the colon that is removed impacts the consistency of the stool produced. The primary function of the colon is to absorb water and nutrients from the waste material received from the intestines. When a larger portion of the colon is removed, this absorption process is consequently limited, leading to a stool output that is more liquid in consistency.

In cases where a significant amount of the colon is retained, like in a descending or sigmoid colostomy, there tends to be more absorption of water, resulting in firmer stools. Conversely, with an increased portion of the colon excised, especially when it involves the ascending colon, the stool remains less processed and thus more liquid. This physiological principle explains why the stool becomes liquid with the increase of colon excised during the colostomy procedure.

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