the absorption of digested food takes place in the stomach.
where does the absorption of digested food take place?
the stomach
the device is connected at one end to the beginning of the duodenum (first portion of the small intestine from the stomach) and at the other the mid-jejunum (the secondary stage of the small intestine). a nitinol anchor secures the bag at the duodenum, ensuring the liner doesn't migrate and that the chyme (the semifluid mass of partially digested food that exits the stomach) completely enters into the liner. this prevents the partially digested food from entering the first and initial part of the secondary stage of the small intestine, mimicking the effects of the biliopancreatic portion of roux en-y gastric bypass (rygb) surgery. this reduces the amount of calories absorbed and causes bile and pancreatic fluids to be redistributed later in the mid-jejunum for reduced breakdown and absorption of the chyme.
duodenal-jejunal bypass liner
when sieved from the water, food is swallowed and travels through the esophagus where it enters a three-chambered-stomach. the first compartment is known as the fore-stomach; this is where food gets ground up into an acidic liquid, which is then squirted into the main stomach. like in humans, the food is mixed with hydrochloric acid and protein-digesting enzymes. then, the partly digested food is moved into the third stomach, where it meets fat-digesting enzymes, and is then mixed with an alkaline liquid to neutralize the acid from the fore-stomach to prevent damage to the intestinal tract. their intestinal tract is highly adapted to absorb the most nutrients from food; the walls are folded and contain copious blood vessels, allowing for a greater surface area over which digested food and water can be absorbed. baleen whales get the water they need from their food; however, the salt content of most of their prey (invertebrates) are similar to that of seawater, whereas the salt content of a whale's blood is considerably lower (three times lower) than that of seawater. the whale kidney is adapted to excreting excess salt; however, while producing urine more concentrated than seawater, it wastes a lot of water which must be replaced.
baleen whale