What are the 3 functions of the stomach?

Question

thanks!

Answer 1

http://en.wikipedia.org/wiki/Stomach

Functions

The stomach is usually a highly acidic environment due to gastric acid production and secretion which produces a luminal pH range usually between 1 and 4 depending on food intake and other factors. Such an environment is able to break down large molecules (such as from food) to smaller ones so that they can eventually be absorbed from the small intestine. The stomach can produce and secrete about 2 to 3 liters of gastric acid per day.

Pepsinogen is secreted by chief cells and turns into pepsin under low pH conditions and is a necessity in protein digestion.

Absorption of vitamin B12 from the small intestine is dependant on conjugation to a glycoprotein called intrinsic factor which is produced by parietal cells of the stomach.

Other functions include absorbing water, some ions, and some lipid soluble compounds such as alcohol, aspirin, and caffeine.

Answer 2

mechanical breakdown of food (churning), chemical breakdown (enzymes) and digestion of alcohols (I THINK)