Digestion 0.5% hydrochloric acid (HCl), which lowers the pH to the desired pH of 1-3. Acid release is also triggered by acetylcholine and histamine. The intestinal phase has two parts, the excitatory and the inhibitory. Partially digested food fills the duodenum. This triggers intestinal gastrin to be released. Enterogastric reflex inhibits vagal nuclei, activating sympathetic fibers causing the pyloric sphincter to tighten to prevent more food from entering, and inhibits local reflexes. Protein digestion occurs in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food
Break It Down Again So Low" in 1992). As with the "Elemental" album, the song featured Roland Orzabal with peripheral Tears For Fears band members Alan Griffiths and Gail Ann Dorsey. The music video shows Orzabal, Griffiths, and Dorsey performing the song on the desert El Mirage Lake, California, where the "Break It Down Again" single and the "Elemental" album covers were taken. The video was directed by Dani Jacobs. CD maxi Break It Down Again "Break It Down Again" is a song by British band Tears For Fears, released as the first single from their 1993 album "Elemental". The song was an international