Gastric acid network (called canaliculi) from which the hydrochloric acid is secreted into the lumen of the stomach. The pH of gastric acid is 1.5 to 3.5 in the human stomach lumen, the acidity being maintained by the proton pump H/K ATPase. The parietal cell releases bicarbonate into the bloodstream in the process, which causes a temporary rise of pH in the blood, known as an alkaline tide. The highly acidic environment in the stomach lumen causes proteins from food to lose their characteristic folded structure (or denature). This exposes the protein's peptide bonds. The gastric chief cells of the stomach secrete
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