Functions of HCl: Turn pepsinogen into pepsin provide a medium of low pH favoring pepsin action; Kill many swallowed virulent organisms; Promote the secretion of pacreas bile; Promote the absorption of calcium ferrum Pepsinogen Secreted by chief cells activate by HCl Function:digest proteins into proteoses,peptones, polypeptides,with little free amino acids Functions of HCl: Turn pepsinogen into pepsin & provide a medium of low pH favoring pepsin action; Kill many swallowed virulent organisms; Promote the secretion of pacreas & bile; Promote the absorption of calcium & ferrum Pepsinogen Secreted by chief cells & activate by HCl Function: digest proteins into proteoses, peptones, polypeptides, with little free amino acids