netter134

Castric Digestion

GASTROINTESTINAL PHYSIOLOGY

Figurę 7.12 Gastric Digestiye Function

The stornach serves to break food in to smali, morę easily digestible fragment*. In addition, it begins the enzymatic digestion ot proteins through the action of pepsin and HCI. Ingesled starches continue to be broken down by salivary amylase. Sonie tat digestion begins in

the mouth and stornach mediated by the presence o i lingual and gastric lipase (not shown in figurę). The parietal cells also secrete intrinsic tactor, which complexes vitamin B,,. Absorption ot 15,. then occurs in the terminal portion ot the ileum.

152