THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The role of the ascending colon is to absorb the remaining water and other key nutrients from the indigestible material, solidifying it to form stool. The descending colon stores feces that will eventually be emptied into the rectum.

Detailed explanation-2: -In the small intestine, water absorption is brought about by the creation of suitable osmotic gradients that promote net uptake of water from the intestinal lumen.

Detailed explanation-3: -The large intestine absorbs water and changes the waste from liquid into stool.

Detailed explanation-4: -Water diffuses in response to the osmotic gradient established by sodium-in this case into the intercellular space. It seems that the bulk of the water absorption is transcellular, but some also diffuses through the tight junctions. Water, as well as sodium, then diffuses into capillary blood within the villus.