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. The primary function of the stomach is to break large proteins into smaller peptides and peptones. Pepsin is an enzyme produced in the acidic environment of the stomach (1.5 to 7.0 pH) which digests proteins into smaller peptides of varying lengths.