North Korea has long complained about U.S.-South Korean military exercises â and not entirely without reason. (Ask a Georgian how Russiaâs Kavkaz-2008 exercise ended.) As the Clinton administration neared a nuclear deal with North Korea, it suspended the old, annual Team Spirit exercise that so irritated North Korea.
The stomach's main function is digestion. It does this by: The stomach uses pepsin (enzyme) and peptidase (another enzyme) to break down proteins in your food. The acid released by the stomach doesn't break down food it only provides a good environment for the enzymes to work in.
The stomach secretes a number of other important substances including hormones to regulate the functions of the stomach, mucus to protect the gastric lining from damage by acid, and a substance (intrinsic factor) which is necessary for the body to absorb vitamin B12 from the diet.