But just because you have a gym membership that you actually use doesnât mean you canât also have a few things at home for doing other types of workouts that you donât have time for at the gym, or for those days that you just canât make it out the front door.
The inside wall of the small intestine needs to be thin, with a really big surface area. This allows absorption to happen quickly and efficiently. If the small intestine had a thick wall and a small surface area, a lot of digested food might pass out of the body before it had a chance to be absorbed.
The chloride ions are absorbed through the process of exchange. The colon secretes bicarbonate ions into the lumen which facilitates chloride absorption through the epithelial cells (R. Bowen, 1998). Finally water is absorbed through the regular osmosis processes that the body uses in the small intestine.The water is then diffused into the blood from the lumen directly (R. Bowen, 1998)..3 Absorption [edit]. Most digested molecules of food, as well as water and minerals, are absorbed through the small intestine. The mucosa of the small intestine contains many folds that are covered with tiny fingerlike projections called villi.