This Mad Men star took on as Colonel Sanders by October 2016, according to Adweek, to promote KFCâs Nashville Hot Chicken. Nashville played a big role in Elvis Presleyâs life, and the commercial had Kartheiserâs face on a record sporting Presleyâs trademark hairstyle. Billy Zane. Earlier this year, KFC had Zane play the Colonel.
All Aboard â The Digestive Process Starts in the Mouth. Digestive enzymes dwell in our mouth, where our saliva, containing an enzyme called amylase, acts as a catalyst in breaking down food and begins the process of digestion. This enzyme, also found in the pancreas, starts breaking down starches, or complex carbohydrates, into simple sugars.
Digestive enzymes are diverse and are found in the saliva secreted by the salivary glands, in the stomach secreted by cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the intestinal (small and large) secretions, or as part of the lining of the gastrointestinal tract. Pepsinogen is then activated by the stomach acid into its active form, pepsin. 2  Pepsin breaks down the protein in the food into smaller particles, such as peptide fragments and amino acids. 3  Protein digestion, therefore, first starts in the stomach, unlike carbohydrate and lipids, which start their digestion in the mouth.