How is water is absorbed in the gastrointestinal tract?

Question

Quizplus · Accepted Answer

Water is absorbed in the gastrointestinal tract mainly by osmosis. The water moves from areas of high concentration to low concentration, depending on the amount of solutes present in the area. The gastrointestinal tract has less solutes than the intestinal lumen, so water moves by osmosis to reach a state of balance. Active transport can also occur for certain ions, but it's not the main mechanism of water absorption. Diffusion doesn't happen as water moves down its concentration gradient, not along it. And specific receptors are unrelated to water absorption.

How Is Water Is Absorbed in the Gastrointestinal Tract