Human digestive system the stomach. It connects to the duodenum via the pancreatic duct which it joins near to the bile duct's connection where both the bile and pancreatic juice can act on the chyme that is released from the stomach into the duodenum. Aqueous pancreatic secretions from pancreatic duct cells contain bicarbonate ions which are alkaline and help with the bile to neutralise the acidic chyme that is churned out by the stomach. The pancreas is also the main source of enzymes for the digestion of fats and proteins. Some of these are released in response to the production of CKK in
Development of the digestive system the 10th week, it returns into the abdominal cavity. While these processes are occurring, the midgut loop rotates 270° counterclockwise. Common abnormalities at this stage of development include remnants of the vitelline duct, failure of the midgut to return to the abdominal cavity, malrotation, stenosis, and duplication of parts. The hindgut gives rise to the region from the distal third of the transverse colon to the upper part of the anal canal. The distal part of the anal canal originates from the ectoderm. The hindgut enters the posterior region of the cloaca (future anorectal canal), and the allantois enters the