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 Down (EP) Imported Album category for the first week of July. The album's title track "Break Down" was the first-place winner for two consecutive weeks on Mnet's M! Countdown music show, for 16 and 23 June 2011; and also won for two consecutive weeks on KBS's Music Bank. It is also certified platinum in Taiwan and Kim was presented with a platinum record by Warner Music Taiwan CEO Chen Ze Shan in a press conference held in Taiwan. Break Down (EP) Break Down is the debut Korean solo mini album of Kim Hyun-joong of South Korean boy band SS501. It was released